Preheat your oven to 350°F (175°C) and grease a 9-inch pie pan with cooking spray or softened butter.

In a large skillet over medium heat, brown 1 pound of ground beef for about 7-8 minutes, breaking it into smaller pieces with a spatula until fully cooked and no longer pink.

Stir in 3 tablespoons of taco seasoning into the cooked ground beef, ensuring it's evenly coated. Cook for another 1-2 minutes.

Using a spoon, transfer the seasoned beef mixture into the greased pie pan, spreading it evenly across the bottom.

In a mixing bowl, whisk together ⅔ cup heavy whipping cream, 4 large eggs, ⅓ cup chunky salsa, 1 cup of shredded cheddar cheese, ½ teaspoon garlic salt, and ¼ teaspoon ground black pepper. Mix until smooth.

Pour the creamy filling mixture over the seasoned beef in the pie pan, using a spatula to spread it evenly. Sprinkle the remaining ¼ cup of shredded cheddar cheese on top.

Place the pie in the preheated oven and bake uncovered for 35-40 minutes until the center is set and the top is golden-brown.

Once baked to perfection, remove the pie from the oven and let it rest for 5-10 minutes before slicing.