Preheat oven to 350 °F (175 °C) and position a rack in the center
Grease a 9-inch pie pan with oil or nonstick spray
Brown ground beef in a skillet over medium heat
Break beef apart while cooking until no longer pink
Drain excess grease if desired
Sprinkle taco seasoning over cooked beef and stir well
Spread seasoned beef evenly in the prepared pie pan
In a mixing bowl, whisk together heavy cream and eggs
Add salsa, 1 cup of shredded cheese, garlic salt and black pepper
Pour the creamy mixture over the taco beef layer
Sprinkle the remaining ¼ cup of cheese on top
Bake uncovered for 35–40 min or until the filling is set and the top is lightly golden
Let cool 5-10 min before slicing
Add your favorite optional toppings and serve warm