Southwestern Summer Squash Casserole

Name: Southwestern Summer Squash Casserole
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Cuisine: American, Southern
Ingredients: Non-stick cooking spray; 2 tablespoons unsalted butter; 1 tablespoon canola or olive oil; 5 medium yellow squash (1 3/4 to 2 pounds), sliced; 2 fresh green chilies of your choice (hot or mild) sliced; 1 bunch scallions, white and light green part only, chopped; 2 cloves garlic, minced; salt and freshly ground black pepper, to taste; 3/4 cup mayonnaise; 4 ounces cream cheese, softened; 2 large eggs; 2/3 cup freshly grated Parmesan cheese, divided; 10-12 butter crackers (such as Ritz), crushed