I simply omitted the pasta, browned the ground beef and onions, added pizza sauce and cheese, and baked. This hamburger casserole is saucy, so definitely serve it on top of something – tonight I served it over plain shirataki noodles (make sure you rinse, boil and dry them in a hot skillet first), but cauliflower rice should work well too.
- Olive oil spray (make your own using a spray bottle)
- 1 tablespoon olive oil
- 1 lb. lean ground beef
- 1 medium onion (6 oz), chopped
- 1 teaspoon kosher salt
- ¼ teaspoon black pepper
- 1 tablespoon minced garlic
- 1 cup pizza sauce (Rao’s has a clean ingredients list; their spicy tomato sauce is amazing)
- ½ cup (2 oz) sharp cheddar, shredded
- ½ cup (2 oz) part skim mozzarella, shredded
- Preheat oven to 350 degrees F. Lightly spray a 1-quart baking dish with olive oil spray.
- Heat the olive oil in a large, deep skillet over medium-high heat, about 3 minutes.
- Add the beef, onions, salt and pepper. Cook, stirring often and breaking up the meat as it cooks into small chunks, until beef is no longer raw (a little pink is fine, it will continue cooking in the oven) and onion is translucent, about 5 minutes.
- Add the garlic and cook, stirring, 1 more minute.
- Stir in the pizza sauce and mix until well-incorporated.
- Turn the heat off. Stir in the cheddar and mix until melted and incorporated into the beef mixture.
- Transfer the mixture to the prepared baking dish. Sprinkle with the mozzarella. Bake 30 minutes. While the casserole bakes, prepare your cauliflower rice or shirataki.
- Allow to rest 10 minutes outside the oven, then serve.