Shepherd's Pie Mexicana

Step 1
Preheat oven to 350 degrees F (175 degrees C). Coat a 9 inch square baking dish with cooking spray.

Step 2
Bring a large pot of salted water to a boil. Add potatoes and cook until tender enough to pierce with a fork; drain. Mash by hand using a potato masher or sturdy whisk. Mix in butter, milk, garlic powder, and salt and pepper to taste. Set aside.

Step 3
Heat oil in a large skillet over medium heat. Add onions; cook and stir until softened, 8 to 10 minutes. Add garlic and ground beef and cook until meat loses its pink color. Season with seasoned salt and taco seasoning. Add peas and corn and stir until blended.

Step 4
Pour beef and vegetable mixture into prepared baking dish. Cover with mashed potatoes.

Step 5
Bake in preheated oven until potatoes are golden and beef and vegetable mixture is hot and bubbly, 30 to 35 minutes.