Luna Grace June 26, 2026

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Slow Cooker Chicken, Broccoli and Rice Casserole

Name: Slow Cooker Chicken, Broccoli and Rice Casserole
Prep time: 15 min
Cook time: 3 h
Total time: 3 h 15 min
Cuisine: American
Ingredients: 1 small onion, chopped; 1 cup long grain brown rice, rinsed and drained; 1 tablespoon Dijon mustard; 1 teaspoon garlic powder; 1 teaspoon dried thyme; 1/2 teaspoon salt; 1/4 teaspoon black pepper; 2 cups low sodium chicken broth; 1 pound boneless skinless chicken breasts; 1 pound broccoli, cut into small pieces; 1/2 cup plain Greek yogurt (optional); 1/2 cup grated Parmesan cheese; 1 cup shredded cheddar cheese

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Slow Cooker Chicken, Broccoli and Rice Casserole is the epitome of cozy comfort food, perfect for those chilly evenings when all you want is a warm, filling dish. The creamy blend of rice, tender chicken, and vibrant broccoli enveloped in a rich sauce makes for a delightful family meal that can simmer gently in your slow cooker while you go about your day. Whether it’s a busy weekday or a leisurely weekend gathering, this dish brings everyone to the table with its mouthwatering aroma.

What Makes This Special

This Slow Cooker Chicken, Broccoli and Rice Casserole is truly a triumph of flavors and textures, sure to become a favorite in your household. Here are just a few reasons why you’ll love it:

Easy to prepare with just a few simple ingredients
Perfect for busy schedules, allowing you to set it and forget it
Nutrient-rich with the addition of broccoli for a burst of color and vitamins
Creamy and satisfying, it’s comfort food at its finest

Gather These Ingredients

To create this creamy masterpiece, you’ll need a handful of wholesome ingredients, each playing a crucial role in the flavor and texture of your casserole. Here’s what you’ll need:

1 small onion (chopped)
1 cup long grain brown rice (rinsed and drained)
1 tablespoon Dijon mustard
1 teaspoon garlic powder
1 teaspoon dried thyme
1/2 teaspoon salt
1/4 teaspoon black pepper
2 cups low sodium chicken broth
1 pound boneless skinless chicken breasts
1 pound broccoli (cut into small pieces)
1/2 cup plain Greek yogurt (optional, for extra creaminess)
1/2 cup grated Parmesan cheese
1 cup shredded cheddar cheese

These ingredients come together to create a delicious and hearty meal that warms your soul.

Bringing It Together

Follow these simple steps to transform your ingredients into a delightful casserole:

Place the chopped onion, rinsed brown rice, Dijon mustard, garlic powder, dried thyme, salt, and black pepper in the bottom of your slow cooker. The combine these ingredients creates a flavorful base for your casserole.
Pour the chicken broth over the ingredients, stirring until they are well combined. The broth will keep your casserole moist and flavorful.
Add the boneless, skinless chicken breasts on top of the mixture and sprinkle with additional black pepper. This ensures the chicken is seasoned perfectly.
Cover the slow cooker and cook on high for 2 1/2 to 3 1/2 hours, until the chicken is cooked through and the rice has absorbed almost all of the broth. My slow cooker usually takes about 3 hours on high.
While the chicken and rice are finishing, prepare the broccoli. You can steam it on the stove or in the microwave, or roast it in your oven. If you prefer, you can add the broccoli to the slow cooker during the last hour of cooking. However, for the best color and texture, I recommend steaming it separately.
Once the chicken and rice are done, carefully remove the chicken breasts and place them on a cutting board.
Stir in the plain Greek yogurt (if using), grated Parmesan cheese, and shredded cheddar cheese to the rice mixture in the slow cooker. This step enhances the creaminess of the dish.
Cut the chicken into bite-sized pieces and return it to the slow cooker along with the cooked broccoli. Give everything a good stir to combine.

Prep ~15 minutes, Cook ~3 hours, Total ~3 hours 15 minutes, Servings ~6, Kcal ~450 (est.).

Make-Ahead and Prep Tips

This casserole can be prepped ahead of time. You can chop the onion and broccoli the night before and store them in airtight containers in the fridge. You can also assemble the ingredients in the slow cooker insert a day in advance; just keep it refrigerated until you’re ready to cook. When it’s time to eat, simply place the slow cooker insert in the device and set to cook.

Storing and Reheating

If you have leftovers, they can be stored in the refrigerator for up to 3 days in an airtight container. For longer storage, you can freeze the casserole for up to 3 months. When reheating, gently warm it on the stove or in the microwave until heated through. Look for a creamy consistency; if it seems too thick, add a splash of broth to loosen it up.

Perfect Pairings

Here are a few ideas to round out your meal alongside the Slow Cooker Chicken, Broccoli and Rice Casserole:

Fresh garden salad with a light vinaigrette
Warm garlic bread for dipping
Roast veggies for a colorful side
Fruit salad for a refreshing finish

Flavor Twists and Substitutions

This casserole is versatile, and you can easily customize it to suit your taste. Here are some ideas:

Swap out the broccoli for spinach or green beans for a different veggie twist.
Add some cooked quinoa for added texture and nutrition.
Try using a different cheese, like mozzarella or a spicy pepper jack, for a flavor kick.
Mix in some cooked turkey for additional protein.
For a touch of spice, incorporate red pepper flakes or diced jalapeños.

Cook’s Notes and Secrets

Make sure to rinse your brown rice thoroughly to remove excess starch, which promotes stickiness.
Use a meat thermometer to check that the chicken has reached an internal temperature of 165°F.
Nutritional yeast can be used along with cheese for a vegan twist while maintaining flavor.
Let the casserole rest for a few minutes before serving, allowing the flavors to meld together beautifully.

Your Questions Answered

Can I use white rice instead of brown rice? It’s recommended to use long grain brown rice for this recipe, as it cooks perfectly in the slow cooker. White rice may overcook or become mushy.
Is this casserole gluten-free? Yes, as long as you ensure that your chicken broth is gluten-free, this recipe is suitable for gluten-sensitive individuals.
Can I add other vegetables? Absolutely! Feel free to mix in any vegetables you like, such as bell peppers or peas.
How do I know when it’s done cooking? The casserole is done when the chicken is fully cooked and no longer pink inside, and the rice has absorbed most of the liquid.
Can I make this in the oven instead? This recipe is optimized for a slow cooker, but you can bake it at 350°F for about 30-45 minutes. Just ensure the chicken is cooked to the appropriate temperature.

Final Thoughts

Slow Cooker Chicken, Broccoli and Rice Casserole is not just a dish, but a comforting hug in a bowl, perfect for any occasion. It’s an excellent way to bring family and friends together for a delightful meal. Whether you’re entertaining guests or just enjoying a quiet dinner at home, this casserole is a fantastic choice that you’ll want to make again and again. Don’t forget to try it with other delicious recipes like chicken burrito bowl for variety in your menu or indulge in creamy chicken brown rice casserole for another creamy delight. Enjoy!