Cheesy Chicken Spaghetti Squash Casserole

Name: Cheesy Chicken Spaghetti Squash Casserole
Prep time: 15 min
Cook time: 1 h 5 min
Total time: 1 h 20 min
Cuisine: American
Ingredients: 1 large spaghetti squash; 2-3 large chicken breasts (about 1.25 pounds); 1 Tablespoon Italian seasoning; 1/2 teaspoon salt; 1 medium green bell pepper, diced; 6 ounces diced tomatoes (drained, about 2/3 cup); 1 10.5 ounce can cream of mushroom; 1/4 cup plain Greek yogurt; 1 teaspoon minced garlic; 2 cups shredded cheese (divided); 2 Tablespoons chopped fresh basil or chives (optional)

Instructions

Prep:15minCook:1h 5min

I've been making this Cheesy Chicken Spaghetti Squash Casserole recipe for YEARS and it's still one of my favorites! With 32g of protein and 100+ 5-star reviews, it's a high-protein low-carb meal that's comforting, full of cheesy goodness, and everyone loves. Even my kids are obsessed with this one! This is the EASIEST weeknight dinner or healthy freezer meal.

Updated at: Wed, 25 Feb 2026 03:22:53 GMT