Bake for 40-45 minutes or until the cheese is melted and the casserole is heated through.
Let it rest for about 10-15 minutes before slicing. Garnish with parsley and basil.
Notes
Grease the casserole dish for easier cleanup.
Feel free to substitute marinara for the spaghetti sauce.
You can substitute ground sausage, Italian sausage, or ground turkey for the ground beef.
The cheese mixture can be mixed with a spoon, but a handheld mixer makes it faster, easier, and creamier.
Try adding other spices and herbs like garlic powder, onion powder, red pepper flakes, oregano, and thyme.
If you prefer more vegetables, add tomatoes, sautéed spinach, or mushrooms.
Let the casserole sit for 15 minutes after removing it from the oven to make it easier to cut into slices.
This casserole sits high in a 9×13 dish, so be careful covering it with aluminum foil to keep it warm. Make a tent to keep from peeling off the top layer of cheese.
Store leftovers in an airtight container in the fridge for up to three days. Reheat in the microwave at reduced power until warm.
To freeze, wrap the casserole with several layers of plastic wrap and freeze for up to two months. Defrost in the fridge overnight.