1) Brown ground beef with salt, pepper, and garlic powder.
2) If making fresh mashed potatoes: boil the potatoes until a fork goes in easily.
3) Drain potatoes and smash.
4) In a 9X13 baking pan, layer ground meat, then corn, then mashed potatoes.
5) Bake for 30 minutes @ 350 or microwave for 3-5 minutes until heated through.