Preheat oven to 375°F (190°C).

Press crescent roll dough into a greased 9-inch pie dish to form the crust.

Bake the crust for 7–8 minutes, just until lightly golden.

While crust is baking, cook ground beef in a skillet until browned. Drain excess fat.

Add taco seasoning and cook according to package instructions (typically with 2/3 cup water).

Spread crushed corn chips evenly over baked crust.

Add the taco beef mixture, then spread sour cream over top.

Sprinkle with shredded cheese.

Bake uncovered for 10–15 more minutes, or until cheese is melted and bubbly.

Let rest 5 minutes, then top with fresh lettuce and tomatoes if desired. Slice and serve