Fresh spinach and seasoned chicken are folded into a creamy pesto sauce and baked over a bed of cauliflower rice. The dish uses a blend of heavy cream, cream cheese, and basil pesto to create a rich, green-tinted sauce that coats the vegetables and protein. Served hot with a bubbly mozzarella topping, the casserole has a bright herb scent and a comforting profile that moves directly from stovetop to table.

About This Recipe

Cooking the cauliflower rice in a skillet for a few minutes before baking is the first step, as it lets the moisture evaporate so the casserole stays thick and creamy. While the rice dries out, you season the chicken and give it a quick sear to help it brown before mixing it with the rest of the ingredients. The sauce is made by melting the cream cheese into the heavy cream and stirring in the pesto, which creates a stable, herb-filled base that holds everything together without needing any flour.

The dish tastes fresh and savory, with the bright basil from the pesto cutting through the buttery richness of the cream and chicken. Garlic and Parmesan give the bake a steady, savory background that fits well with the mild flavor of the cauliflower and the earthy finish of the spinach. As the casserole bakes, the cheese on top melts into the sauce, creating a steady, savory flavor that runs through the entire dish.

This pesto chicken rice bake is served in deep portions and stays together well when sliced, making it a great choice for a family dinner or meal prep. Because the cauliflower rice is pre-cooked, it absorbs the green sauce perfectly without making the bottom of the dish watery. You can easily add a few sun-dried tomatoes or some crushed red pepper if you want a bit of tangy sweetness or some heat. It works as a full meal on its own or alongside a simple salad, offering a straightforward and fresh keto-friendly dinner.

Why You’ll Love This Recipe

Fresh basil pesto flavor
Creamy, comforting texture
Low-carb cauliflower rice base
Perfect for meal prep
Family-friendly
Easy to customize
Naturally keto
Great chicken casserole option

What You’ll Need for This Spinach Pesto Chicken Rice Casserole

For the Casserole

1.5 lb chicken breast, cut into bite-size pieces
3 cups cauliflower rice
2 cups fresh spinach
1 tbsp olive oil
1/2 tsp salt
1/2 tsp black pepper

Pesto Cream Sauce

1 cup heavy cream
4 oz cream cheese
1/3 cup basil pesto
1/2 tsp garlic powder

For Topping

1 1/2 cups shredded mozzarella
1/4 cup grated Parmesan (optional)

Step-by-Step Preparation

Preheat oven to 375°F.
Heat olive oil in a skillet over medium heat. Add cauliflower rice and cook 4–5 minutes to release moisture. Set aside.
Season chicken with salt and pepper. Lightly brown in the same skillet 3–4 minutes (not fully cooked).
In a saucepan, heat heavy cream and cream cheese until smooth.
Stir in pesto and garlic powder.
Combine cauliflower rice, chicken, spinach, and pesto cream sauce.
Transfer to a greased baking dish.
Top with mozzarella and optional Parmesan.
Bake 20–25 minutes until bubbly and chicken is cooked through.
Rest 5 minutes before serving.

FAQ

Q: Can I use rotisserie chicken?
A: Yes — skip browning and reduce bake time slightly.
Q: Will frozen cauliflower rice work?
A: Yes — cook longer to remove moisture before baking.
Q: Can I add mushrooms?
A: Absolutely. Sauté first to remove moisture.
Q: Is store-bought pesto okay?
A: Yes — choose a low-carb, sugar-free option.
Q: Is this good for meal prep?
A: Excellent. It reheats well and keeps texture.

Variations & Substitutions

Add sun-dried tomatoes
Use chicken thighs for extra juiciness
Swap mozzarella for provolone
Add extra Parmesan for sharper flavor
Stir in roasted garlic
Add pine nuts for crunch (optional)

Serving Suggestions

Serve with a crisp green salad
Pair with roasted broccoli
Add a lemony side salad
Enjoy as a stand-alone meal

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