Step 1

Preheat the oven to 325 degrees F.

Step 2

Pour the ground beef into a large sauté pan over medium-high heat.

Step 3

Finely crumble the ground beef as it cooks. When it is fully cooked, drain the grease from the pan.

Step 4

Add the water and taco seasoning to the pan with the ground beef.

Step 5

Stir well and leave to simmer for 4 minutes over medium-high heat.

Step 6

Add the diced onions, tomatoes, chiles, and corn to the pan.

Step 7

Stir well and reduce to low heat.

Step 8

Pour the premade baking mix and water into a mixing bowl and stir until a sticky dough is formed.

Step 9

Place the dough into the bottom of a greased 9x13 inch baking dish, spreading it out evenly.

Step 10

Place the ground beef mixture on top of the dough and spread out evenly.

Step 11

Place the cream cheese, mayo, onion powder, and salt into a mixing bowl and cream together with an electric mixer until smooth consistency.

Step 12

Spoon the cream cheese mixture on top of the ground beef mixture and spread it out as evenly as possible.

Step 13

Sprinkle the cheddar cheese and shredded mozzarella on top of the dish.

Step 14

Place the dish in the oven to bake for 40 minutes.

Step 15

Remove the casserole from the oven and allow it to cool for a few minutes before serving.

Step 16

Serve warm!