This single serving taco casserole is a flavorful, layered dish made with crispy tostadas, seasoned ground beef, salsa, and melted cheddar cheese. Baked until golden and topped with your favorite taco toppings.
Cook the Onions and Garlic: In a small pan, heat oil over medium-high heat. Add chopped onions and cook for 2 minutes. Stir in garlic and cook for 1 minute more.
Brown the Beef: Add ground beef to the pan. Cook, stirring occasionally, until browned and fully cooked, about 5–6 minutes.
Simmer the Sauce: Stir in salsa, water, and taco seasoning. Reduce heat to low and simmer for 4 minutes, stirring occasionally, until slightly thickened.
Assemble the Casserole: Lightly spray a small baking dish with oil. Place 1 tostada (or crumbled taco shells) in the dish. Spoon half the beef mixture over the tostada, then sprinkle with ½ cup shredded cheese.
Layer and Bake: Add another tostada, the remaining beef, and ¼ cup of shredded cheese. Top with a final tostada and the remaining ¼ cup of cheese. Bake for 25 minutes, until the cheese is melted.
Serve: Top with sour cream, black olives, and extra salsa if desired.
Notes
Drain Excess Grease: If using ground beef with a higher fat content, drain the grease after cooking to prevent a greasy casserole.
Crispy Layers: For the best texture, use tostadas. If using crumbled taco shells, press them down lightly to create a solid base.
Prevent Sogginess: If using homemade salsa, drain excess liquid to keep the tostadas crispy.
Make Ahead Option: Cook the beef mixture in advance and store it in the fridge for up to two days. Assemble and bake when ready.