Heat the olive oil in a large skillet over medium heat. Add the diced onion and cook for 2–3 minutes until softened.
Add the ground beef and cook until browned, breaking it apart with a spoon as it cooks. Drain any excess grease.
Add the minced garlic, chili powder, cumin, paprika, salt, and black pepper. Stir well and cook for another minute.
2. Make It Creamy
Reduce the heat to low. Stir in the cream cheese and sour cream until the mixture becomes creamy and well combined.
Fold in half of the diced tomatoes and half of the sliced olives.
3. Assemble the Casserole
Transfer the beef mixture to a greased baking dish and spread it evenly.
Sprinkle the remaining tomatoes, black olives, and sliced jalapeños over the top.
Cover generously with shredded cheese.
4. Bake
Bake uncovered for approximately 20–25 minutes, until the casserole is hot and the cheese is completely melted and bubbling.
For a golden, lightly browned top, broil for 1–2 minutes at the end, watching carefully.
5. Garnish and Serve
Let the casserole rest for about 5 minutes before serving.
Top with plenty of fresh cilantro and additional jalapeños or tomatoes if desired.
Serving Suggestions
Serve this cheesy beef casserole with:
Avocado or guacamole
Fresh salsa
Green salad
Cauliflower rice
Roasted vegetables
Sour cream
Fresh cilantro
Tips for the Best Casserole
Use freshly shredded cheese for the smoothest melt.
Adjust the jalapeños according to your preferred level of heat.
Ground turkey or chicken can be substituted for the beef.
Add bell peppers or extra onions for more vegetables.
For an even richer flavor, add a little shredded Monterey Jack to the cheese topping.
Storage
Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat individual portions in the microwave or reheat the casserole in the oven until hot.
Conclusion
This cheesy Mexican-inspired beef casserole is quick, filling, and full of flavor. The creamy seasoned beef combined with bubbling cheese, tomatoes, olives, jalapeños, and fresh cilantro makes it a delicious option for an easy family dinner.
