Ingredients
- 2 skinless, boneless chicken breast halves
- 4 cups broccoli florets, or to taste
- 1 small onion, chopped
- ½ teaspoon garlic salt
- salt and ground black pepper to taste
- 3 cups cauliflower florets
- 1 teaspoon lemon juice
- ½ cup mayonnaise
- 2 cups shredded Cheddar cheese
Why This Recipe Is So Tasty
Tips For Better Flavor
- For extra flavor, add a pinch of nutmeg or a squeeze of lemon juice to the sauce.
- Let the casserole rest for a few minutes after baking to help it set and make serving easier.
Step 1
Place the chicken breasts in a large pot and covering them with water. Bring it to a boil, then cook until the chicken is fully cooked through and no longer pink inside—this usually takes about 10 minutes. You can check by cutting into the thickest part or using a meat thermometer; it should read 165°F. Once done, take the chicken out and set it aside.
Step 2
Steam the broccoli. Fill a saucepan with a little water, just below the steamer basket, and bring it to a boil. Add the broccoli, cover, and let it steam until tender, around 3 to 6 minutes. Once soft, chop the broccoli into bite-sized pieces.
Step 3
While that’s going, preheat your oven to 350°F. Then, melt the butter in a deep pan over low heat. Add the chopped onion and garlic, cooking gently until the onion becomes soft and translucent, about 8 to 12 minutes. Stir in the garlic salt, parsley, salt, and pepper.
Step 4
Now, pulse the cauliflower in a food processor until it looks like rice. Add this cauliflower “rice” along with the chicken broth to the onion mixture. Cook, stirring occasionally, until the broth has mostly absorbed, roughly 10 minutes. Pour in the heavy cream and lemon juice, letting it simmer uncovered as you stir occasionally until it thickens and blends well, about another 10 minutes. Stir in the mayonnaise, then remove the sauce from the heat and let it cool a bit to thicken.
Step 5
Shred half of the cooked chicken into bite-sized pieces using two forks and add it to the sauce. Use the remaining shredded chicken to line the bottom of your casserole dish. Spread the chopped broccoli over the chicken, then pour the creamy cauliflower sauce on top. Sprinkle generously with cheddar cheese and cover the dish with aluminum foil.
Step 6
Bake the casserole for 30 minutes, then remove the foil and continue baking until the cheese around the edges turns lightly browned and bubbly, about 10 more minutes. Let it rest for 5 to 10 minutes before slicing into six portions and serving.