Crockpot Mozzarella Mushroom Chicken Thighs Step-by-step instructions

Before you start

Before you start, make sure you have a 6-quart slow cooker. If your slow cooker is smaller, you may need to adjust the amounts. The chicken thighs should be thawed if frozen; do not cook from frozen.

Wipe the mushrooms with a damp paper towel and slice them if they aren't pre-sliced. Measure out the mozzarella and have the garlic herb butter ready. Cook the penne pasta just before serving, so it stays al dente and doesn't get soggy.

Instructions

Layer and Dump

1. 1Layer the Chicken
   Place the chicken thighs in an even layer in the bottom of a 6-quart slow cooker. They can overlap slightly, but try to keep them in a single layer for even cooking.
   Look for The chicken thighs cover the bottom of the slow cooker.
   Tip If the thighs are very large, you can trim them or cut them in half for more even cooking.
2. 2Add Mushrooms
   Scatter the sliced cremini mushrooms evenly over the chicken thighs. They will shrink as they cook, so it's fine if they are piled up a bit.
   Look for The mushrooms form a scattered layer over the chicken.
   Tip Use a paper towel to wipe any dirt off the mushrooms before slicing; avoid rinsing them.
3. 3Pour Over Soup
   Pour the condensed cream of mushroom soup over the mushrooms and chicken. Use a spoon to spread it out evenly, making sure some covers the edges.
   Look for The soup spreads over the top, coating the mushrooms.
   Tip No need to add water or milk; the slow cooker will create enough liquid as the chicken cooks.
4. 4Top with Cheese and Butter
   Sprinkle the shredded mozzarella cheese evenly over the soup. Then place the two tablespoons of garlic herb butter on top, in small pieces so they melt into the sauce.
   Look for The cheese covers the soup, with butter pats visible on top.
   Tip If you don't have garlic herb butter, mix softened butter with garlic powder and dried parsley.

At the end of this phase, the slow cooker contains an even layer of chicken thighs, topped with sliced mushrooms, a blanket of cream of mushroom soup, a shower of mozzarella, and small pats of garlic butter.

The ingredients look neat and colorful, with the white soup contrasting against the brown mushrooms and the golden butter. Everything is ready to cook.

Slow Cook and Shred

5. 5Cook on Low
   Cover the slow cooker and cook on low for 4 to 5 hours, until the chicken is tender and reaches an internal temperature of 165°F (74°C) in the thickest part. Do not lift the lid during the first 3 hours.
   Look for The sauce will be bubbling gently around the edges after 3 hours.
   Safe temperature 165°F (74°C) internal temperature (poultry)
   Tip Cooking on low yields the most tender chicken; high heat can make it dry.
6. 6Shred the Chicken
   Once the chicken is cooked through, use two forks to shred the thighs directly in the slow cooker. Stir the shredded chicken into the sauce until well coated.
   Look for The chicken pulls apart easily and is coated in the creamy sauce.
   Tip Shredding the chicken allows it to soak up more of the sauce and makes it easier to serve.

After 4-5 hours on low, the kitchen smells richly of garlic and mushrooms. The sauce is bubbling gently around the edges, and the chicken is fork-tender, easily pulling apart. The mozzarella has melted into the sauce, giving it a creamy, glossy appearance. The chicken shreds without resistance, and the sauce coats every piece.

Pasta and Serve

7. 7Cook the Pasta
   While the chicken finishes cooking, bring a large pot of salted water to a boil and cook the penne pasta according to package directions until al dente. Drain well.
   Look for The pasta is tender but still firm to the bite.
   Tip Reserve a cup of pasta water before draining in case you want to thin the sauce later.
8. 8Serve Over Pasta
   To serve, place a portion of the cooked penne on a plate or in a bowl. Spoon the creamy mozzarella mushroom chicken over the top, making sure to get plenty of sauce and mushrooms.
   Look for The sauce coats the pasta and the chicken is piled high.
   Tip For extra richness, add a sprinkle of fresh parsley or black pepper before serving.

The penne is cooked al dente and drained. When you spoon the chicken mixture over the pasta, the sauce is thick enough to cling to the noodles but still saucy. The dish looks hearty and inviting, with bits of mushroom and shreds of chicken throughout. The aroma is irresistible—creamy, savory, and garlicky.

Common mistakes

One common mistake is lifting the lid too often, which lets heat escape and extends the cooking time. Resist the urge to peek for the first 3 hours. Another mistake is using chicken breasts instead of thighs—they can dry out in the slow cooker.

If you do use breasts, reduce the cooking time and check for doneness earlier. Also, don't skip the step of shredding the chicken; it helps the sauce cling to the meat and creates a more cohesive dish.

How to tell it’s done

The chicken is done when it reaches an internal temperature of 165°F (74°C) in the thickest part. To check, insert an instant-read thermometer into the center of a thigh without touching bone. The meat should be tender and easily pulled apart with a fork.

The sauce should be hot and bubbling, with the cheese fully melted and incorporated. If the sauce looks too thin, you can remove the lid and cook on high for 15-20 minutes to reduce it slightly.

• Poultry: 165°F (74°C) in the thickest part