1. Preheat oven to 375°F (190°C). Lightly grease a baking dish (8×8 or similar).
2. Sauté tomatoes (optional but recommended):
In a skillet, heat olive oil and sauté the cherry tomatoes and garlic for 3–4 minutes until softened and slightly blistered. Add salt and pepper to taste.
3. Assemble the casserole:
In the baking dish, spread cooked chicken evenly.
Add sautéed tomatoes and garlic over the top.
Sprinkle fresh basil over the mixture.
Top with shredded mozzarella and Parmesan.
4. Bake:
Bake uncovered for 25–30 minutes, or until the cheese is melted and bubbly and the edges are golden brown.
5. Finish & serve:
Drizzle lightly with balsamic vinegar or keto balsamic glaze if using.
Garnish with more fresh basil and serve warm.
💡 Tips & Variations:
Chicken option: Use grilled, rotisserie, or leftover chicken breast/thighs.
Add spinach or sautéed mushrooms for extra nutrition.
For extra creaminess, mix 2 tbsp cream cheese into the chicken layer.