Elin’s Slow Cooker Chicken & Vegetable Stew

The slow cooker earns its place in the kitchen most on the days when dinner needs to take care of itself. This slow cooker chicken stew goes into the pot in the morning with fifteen minutes of prep, spends six hours building a deeply herb-infused broth, and arrives at the table as a genuinely satisfying, vegetable-forward meal that tastes like it received considerably more attention than it did.

Elin’s recipe uses both chicken breasts and thighs, which is the right call for a six-hour low-and-slow braise. Breasts contribute lean, clean protein that holds its shape through the long cook. Thighs bring the fat and collagen that make the broth taste rich and silky rather than thin and watery. Together they produce a stew where the chicken is tender without being stringy and the broth is substantial without being heavy.

The tomato paste is the ingredient that makes this stew taste more complex than the ingredient list suggests. It’s not a tomato stew, but six ounces of paste dissolving into the chicken broth and water over six hours produces an umami depth that plain broth alone can’t deliver.

Why You’ll Love Elin’s Slow Cooker Chicken & Vegetable Stew

The vegetable selection is what makes this stew more than just a basic chicken broth situation. Cremini mushrooms added at the start of the cook release their moisture slowly into the broth and absorb the sage and thyme as the hours pass, producing a savory, earthy depth that runs through the entire stew. Carrots and celery soften over the long simmer and become the sweet, aromatic backbone of the broth. Pearl onions, whole throughout the cook, turn completely tender and mild, nothing like the sharp bite of raw onion, and add a gentle sweetness that balances the savory tomato paste base.

The frozen peas and the cornstarch slurry added in the final 30 minutes are the technique worth paying attention to. Adding peas at the beginning of a six-hour slow cook produces gray, mushy peas with very little remaining sweetness. Added in the final 30 minutes on high, they stay bright, sweet, and properly cooked. The cornstarch slurry added at the same time thickens the broth from a thin, sippable liquid into a proper stew consistency that coats every vegetable and piece of chicken.

The flavors genuinely improve overnight. This is a stew worth making the day before when the schedule allows.

Ingredients for Elin’s Slow Cooker Chicken & Vegetable Stew

I always keep both chicken breasts and thighs in this recipe rather than simplifying to one or the other. Six hours on low is the ideal cook time for thighs, which become tender and flavorful without any dryness. Breasts need slightly less time but contribute a clean protein flavor and a firmer texture alongside the thighs. The combination produces a stew where some pieces are silky and rich from the thigh meat and others are firmer and leaner from the breast, which makes each bowl more texturally interesting than using a single cut.

The Protein:

• 1 lb boneless, skinless chicken breasts, cut into bite-sized pieces
• 1 lb boneless, skinless chicken thighs, cut into bite-sized pieces

The Vegetables:

• 2 cups cremini or baby bella mushrooms, halved
• 1 1/2 cups carrots, thinly sliced
• 1 cup celery, sliced into 1/2-inch pieces
• 1 cup frozen small pearl onions or 3/4 cup chopped yellow onion
• 2 cups frozen green peas

The Liquid & Seasoning:

• 14 oz chicken broth
• 6 oz tomato paste
• 2 cups water
• 1 teaspoon paprika
• 1 teaspoon dried rubbed sage
• 1/2 teaspoon dried thyme
• 1/2 teaspoon salt and 1/2 teaspoon black pepper

The Thickener:

• 3 tablespoons cornstarch
• 1/2 cup cold chicken or vegetable broth

Whisk the tomato paste into the chicken broth and water in a separate bowl before adding it to the slow cooker rather than dropping it in as a solid block. Unmixed tomato paste can sit in a dense concentration against the chicken at the bottom of the pot for the first few hours of cooking rather than dissolving evenly through the broth. A pre-mixed liquid poured over the chicken and vegetables distributes the paste flavor uniformly from the first hour. The cornstarch slurry must be made with cold broth rather than warm. Cornstarch mixed with warm liquid begins to thicken immediately and can clump before it’s stirred into the stew, producing uneven pockets of thickness rather than a smooth, uniform consistency.

How to Make Elin’s Slow Cooker Chicken & Vegetable Stew

The key to this stew is resisting the urge to lift the lid during the six-hour cook. Every time the lid is lifted, the slow cooker loses heat and the internal temperature drops, adding approximately 20 minutes to the required cook time for each instance. Set it, seal it, and leave it. The only interaction needed before the final 30 minutes is walking past it and noticing the kitchen smells increasingly good as the afternoon progresses.

1. Cut the chicken breasts and thighs into roughly uniform bite-sized pieces, about 1 to 1.5 inches. Uniform sizing ensures the chicken cooks evenly and the pieces hold together through the long simmer without some falling apart while others remain undercooked.
2. Add the chicken pieces, halved mushrooms, sliced carrots, sliced celery, and pearl onions to a 6-quart slow cooker.
3. In a separate bowl or large measuring cup, whisk together the chicken broth, tomato paste, water, paprika, dried sage, dried thyme, salt, and pepper until the tomato paste is fully dissolved and the liquid is uniformly combined.
4. Pour the liquid mixture evenly over the chicken and vegetables in the slow cooker. Cover and cook on LOW for 6 hours or HIGH for 3 to 4 hours. Do not lift the lid during the cook.
5. Approximately 30 minutes before serving, whisk the cornstarch into the cold broth in a small bowl until completely smooth with no lumps remaining.
6. Stir the cornstarch slurry and the frozen green peas into the slow cooker. Stir gently to distribute both evenly throughout the stew.
7. Replace the lid and switch the heat to HIGH if it was on LOW. Cook for 30 more minutes until the sauce has thickened to a proper stew consistency and the peas are tender and heated through.
8. Taste and adjust salt and pepper before ladling into bowls.

Pro tip: For an even richer broth, stir in a tablespoon of cold butter just before serving. The butter emulsifies into the thickened stew and adds a glossy, velvety finish to the broth that makes the stew look and taste more substantial.

What to Serve with Elin’s Slow Cooker Chicken & Vegetable Stew

The herb-infused, tomato-deepened broth is the star of this meal, and the best sides are ones that interact with it directly.

Crusty sourdough bread: The most practical and satisfying accompaniment for a stew with a broth this good. A thick slice of sourdough for dunking into the bowl soaks up the sage and thyme-infused liquid and turns the last third of every bowl into the best part.

Homemade dinner rolls: Warm, soft dinner rolls alongside the stew for soaking are a more family-friendly alternative to sourdough. The soft, slightly sweet crumb absorbs the broth beautifully and makes the meal feel complete and generous.

White rice: Steamed white rice in the bottom of the bowl with the stew ladled over the top turns this into a more substantial dinner for larger appetites. The rice absorbs the thickened broth from underneath and makes every scoop more filling.

Egg noodles: Wide egg noodles cooked separately and added to each bowl before the stew is ladled over the top add a hearty, comforting base that makes the dish feel closer to a classic chicken noodle experience with all the depth of the slow-cooked broth.

Mashed potatoes: A scoop of buttery mashed potatoes in the center of each bowl with the chicken and vegetable stew surrounding it produces a genuinely satisfying combination where the potatoes absorb the herb-forward broth from all sides.

Light green salad: A simple mixed green salad with a lemon vinaigrette alongside the stew provides a fresh, acidic contrast to a warm, rich, broth-heavy main dish and makes the overall meal feel balanced.

Pro Tips & Variations

Make it the day before: This stew is genuinely better on day two. The sage, thyme, and tomato paste flavors continue to deepen overnight in the refrigerator, and the broth thickens further as it chills. Reheat gently on the stovetop over medium-low heat or in the slow cooker on the warm setting for 1 hour.

Add potatoes: Diced Yukon Gold potatoes added at the beginning of the cook alongside the carrots and celery absorb the herb-infused broth over six hours and become a creamy, flavorful starch element that makes the stew more substantial without any additional sides.

Tofu variation: Replace one pound of the chicken with cubed extra-firm tofu pressed dry before cutting. Add the tofu at the same time as the peas in the final 30 minutes on high so it heats through without breaking down. The tofu absorbs the stew broth effectively and produces a lower-protein but still satisfying bowl.

Add white beans: A drained can of cannellini beans stirred in with the peas at the final stage adds protein, fiber, and a creamy texture that complements the thickened broth and makes the stew even more filling.

Fresh herb finish: A tablespoon of fresh thyme leaves or chopped fresh parsley stirred into the stew immediately before serving brightens the herb profile after six hours of cooking, which can dull the freshness of dried herbs. The fresh herbs added at the end produce an aromatic contrast to the slow-cooked base.

Storage & Reheating Tips

This stew stores exceptionally well and is worth making in full batch quantities specifically for the leftovers. Store in an airtight container in the refrigerator for up to 4 days. The broth thickens further as it chills, which is expected. I always add a splash of chicken broth before reheating to loosen the consistency back to its original texture. Reheat on the stovetop over medium-low heat, stirring occasionally, for the most consistent result. The microwave works at 50 percent power in 90-second intervals, stirring between rounds. This stew freezes well for up to 3 months in freezer-safe containers. Thaw overnight in the refrigerator and reheat gently with a splash of broth to restore the original consistency. The vegetables soften slightly further after freezing and thawing but remain satisfying in the bowl.

Common Questions

My stew broth is still thin after adding the cornstarch slurry. What went wrong? Two things produce a thin result after the slurry step. First, the slurry may have been made with warm rather than cold broth, which prevents it from dispersing evenly. Second, the final 30 minutes may not have been on HIGH heat. Cornstarch needs to reach a near-boil temperature to fully activate its thickening properties. If the stew is still thin after 30 minutes on high, make a second small slurry with one tablespoon of cornstarch and two tablespoons of cold water, stir it in, and cook for an additional 15 minutes on high.

Can I put the chicken in the slow cooker frozen? The USDA recommends against cooking frozen chicken in a slow cooker since the low-temperature start of the slow cooker cycle may keep the chicken in the bacterial growth temperature range for too long before reaching a safe internal temperature. Always thaw the chicken completely in the refrigerator before starting this recipe.

My chicken shredded into very fine pieces rather than holding its shape. Why? Six hours on LOW is the correct setting for this recipe and produces chicken that is tender but still holds its cut shape. Cooking on HIGH for the full 6 hours rather than the recommended 3 to 4 hours significantly overcooks the chicken and causes it to fall apart into fine strands. If a shredded chicken texture is preferred, pull the chicken pieces out at the 5-hour mark, shred with two forks, and return to the stew for the final hour and the pea and slurry step.

Elin’s slow cooker chicken and vegetable stew is the dinner that justifies keeping a slow cooker on the counter. The fifteen-minute morning prep, the hands-off six-hour cook, and the deeply herb-infused, tomato-rounded broth that fills the kitchen with an aroma that makes the evening meal feel like something genuinely worth looking forward to. Ladle it into deep bowls with good bread alongside and discover why this recipe gets better every time it’s made.

Elin’s Slow Cooker Chicken & Vegetable Stew

A hearty fix-it-and-forget-it slow cooker chicken stew with boneless chicken breasts and thighs, cremini mushrooms, carrots, celery, and sweet peas in a sage and thyme herb-infused broth deepened with tomato paste.

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Prep Time 15 minutes mins

Cook Time 6 hours hrs

Total Time 6 hours hrs 15 minutes mins

Servings: 6 servings

Course: Dinner, Main Course

Cuisine: American

Calories: 340

Ingredients Equipment Method Notes

Ingredients

  

• 1 lb boneless skinless chicken breasts cut into bite-sized pieces
• 1 lb boneless skinless chicken thighs cut into bite-sized pieces
• 2 cups cremini or baby bella mushrooms halved
• 1.5 cups carrots thinly sliced
• 1 cup celery sliced into 1/2-inch pieces
• 1 cup frozen small pearl onions or 3/4 cup chopped yellow onion
• 2 cups frozen green peas added in the final 30 minutes only
• 14 oz chicken broth
• 6 oz tomato paste whisked into the broth before adding to the slow cooker
• 2 cups water
• 1 tsp paprika
• 1 tsp dried rubbed sage
• 0.5 tsp dried thyme
• 0.5 tsp salt
• 0.5 tsp black pepper
• 3 tbsp cornstarch for the thickening slurry
• 0.5 cup cold chicken or vegetable broth must be cold for the slurry to work properly

Equipment

• 6-quart Slow Cooker
• Large measuring cup or bowl for mixing liquid
• Small bowl for cornstarch slurry
• whisk

Method

 

1. Add the chicken pieces, halved mushrooms, sliced carrots, sliced celery, and pearl onions to a 6-quart slow cooker.
2. Whisk together the chicken broth, tomato paste, water, paprika, sage, thyme, salt, and pepper in a separate bowl until the tomato paste is fully dissolved.
3. Pour the liquid mixture over the chicken and vegetables. Cover and cook on LOW for 6 hours or HIGH for 3 to 4 hours. Do not lift the lid during cooking.
4. About 30 minutes before serving, whisk the cornstarch into the cold broth in a small bowl until completely smooth.
5. Stir the cornstarch slurry and the frozen green peas into the slow cooker. Replace the lid and switch to HIGH if on LOW.
6. Cook on HIGH for 30 more minutes until the broth has thickened to a stew consistency and the peas are tender.
7. Taste and adjust salt and pepper. Ladle into bowls and serve immediately.

Notes

Do Not Lift the Lid: Each time the lid is lifted during the cook, approximately 20 minutes is added to the required cook time. Leave it sealed until the final 30 minutes. Pre-Mix the Tomato Paste: Whisk the tomato paste fully into the liquid before adding to the slow cooker. Unmixed paste can sit in a concentrated block at the bottom rather than distributing evenly. Cold Slurry: The cornstarch slurry must be made with cold broth. Warm broth causes clumping before the slurry is stirred in. Thin Broth Fix: If still thin after the final 30 minutes, make a second slurry with 1 tbsp cornstarch and 2 tbsp cold water and cook 15 more minutes on high. No Frozen Chicken: Always use fully thawed chicken for food safety reasons. Flavors deepen overnight – excellent for meal prep. Storage: Refrigerate for up to 4 days. Freeze for up to 3 months. Add a splash of broth when reheating.