Step-by-step instructions
- Preheat your oven to 350°F (175°C).
- In a skillet over medium heat, cook the ground beef, chopped onion, and minced garlic until the beef is browned. Be sure to drain any excess fat.
- Stir in the taco seasoning, frozen corn, and diced tomatoes. Mix everything well.
- In a separate bowl, combine the sour cream with one cup of Mexican blend cheese.
- In a baking dish, layer half of the crushed Doritos, followed by the beef mixture. Then, spread the sour cream mixture on top, and finish with the remaining Doritos and cheese.
- Bake for 25-30 minutes or until the cheese is melted and bubbly.
- Garnish as desired and serve hot.
Best ways to enjoy it
To serve your Dorito casserole, consider pairing it with some fresh toppings like chopped green onions, diced tomatoes, or a dollop of guacamole. For a full meal experience, serve it alongside a simple side salad or some seasoned rice. This dish can also shine at potlucks or parties; it’s sure to be a crowd-pleaser!
Keeping leftovers fresh
Storing your leftover Dorito casserole is a breeze! Simply let it cool to room temperature, then cover with plastic wrap or transfer to an airtight container. It can be refrigerated for up to 3-4 days. For longer storage, consider freezing portions. Make sure to wrap it tightly to prevent freezer burn, and you can enjoy it for up to 2 months.
Helpful cooking tips
Want to elevate your Dorito casserole? Here are a few helpful tips:
- For extra crunch, consider baking the Doritos a bit before layering them in the casserole.
- Mixing in some black beans or bell peppers can introduce a nice additional texture and flavor.
- If you like it spicy, try using spicy taco seasoning or adding jalapeños to the beef mixture.
Creative twists
Feel free to get creative! Adding layers of different ingredients can switch things up—like incorporating shredded chicken instead of beef for a lighter option or using a different cheese for a unique flavor profile. You can even create a vegetarian version by substituting the meat with sautéed mushrooms or lentils.

Your questions answered
How long does it take to prepare?
The prep time for Dorito casserole is about 15-20 minutes, and baking takes around 25-30 minutes, so you can have dinner ready in about an hour!
Can I substitute the sour cream?
Absolutely! Greek yogurt is a great substitute and will add a nice tanginess to the dish.
Is it safe to freeze leftovers?
Yes, if stored properly in an airtight container, you can freeze your Dorito casserole for up to two months. Just make sure to let it cool completely before freezing, and defrost it in the refrigerator before reheating.
