Step 1

Move the oven rack to the middle position and preheat the oven to 375 degrees F.

Step 2

Spray a 13x9 inch baking dish with nonstick cooking spray.

Step 3

Heat olive oil to a large skillet and cook ground beef until almost all browned.

Step 4

Add onion and cook until the beef is completely browned.

Step 5

Add garlic and cook for 30-60 seconds, or until fragrant.

Step 6

Stir in taco seasoning until well combined.

Step 7

Add Rotel tomatoes, corn, and black beans and stir until well combined.

Step 8

Bring the mixture to a simmer and cook for 10-15 minutes or until all the flavors are combined.

Step 9

Layer tortillas on the bottom of the baking dish, overlapping slightly and cutting to fit if necessary.

Step 10

Spread a layer of refried beans on top of the tortillas.

Step 11

Add ¼ of the cheese over the beans.

Step 12

Next, top with ⅓ of the meat mixture.

Step 13

Repeat the layers, ending with a layer of tortillas.

Step 14

Top with the remaining cheese.

Step 15

Bake for 15-20 minutes or until the cheese is melted and bubbly.