Prep the Veggies: Place the broccoli florets in a microwave-safe bowl, cover, and microwave for 4 minutes until they're just fork-tender. Don't let them get too soft!
Layer the Casserole: Lightly spray a 9x13 inch casserole dish with olive oil. Spread the tender broccoli evenly in the dish, then layer the chopped rotisserie chicken on top, making sure it's well distributed.
Get Ready to Bake: Preheat your oven to 375°F (190°C).
Start the Sauce: Heat a saucepan over medium heat. Add the olive oil and minced garlic, sautéing for about 15 seconds until it smells wonderful. Be careful not to brown the garlic, or it might taste bitter.
Whip up the Creamy Base: Stir in the salt, ground black pepper, chicken bouillon, mascarpone cheese (or cream cheese), and heavy cream. Whisk everything together until it's smoothly melted and well combined.
Thicken and Cheese: Let the sauce simmer gently for a few minutes until it thickens slightly. Then, stir in half of the shredded cheddar cheese until it melts perfectly into the sauce.
Assemble and Top: Pour this delicious creamy cheese sauce evenly over the chicken and broccoli in your casserole dish. Sprinkle the remaining shredded cheddar cheese over the top.
Bake to Golden Perfection: Bake for 25-30 minutes, or until the cheese topping is bubbly, melted, and beautifully golden brown. Let it rest for a few minutes before serving to allow the flavors to meld and the sauce to set.
Notes
Nutrition Information (per serving): Calories: 384 kcal Total Carbs: 3g Net Carbs: 2g Fats: 32g Protein: 18g