Preheat oven to 350 degrees
Spray 8x8 or 9x9 baking dish with oil and set aside
Heat a large skillet to medium high heat and spray with oil
Add ground turkey to skillet and cook until cooked through
Add worcestershire sauce, onion powder, garlic powder, salt, and pepper and stir to combine, remove from heat
Open cans of green beans and drain
Put green beans in greased baking dish
Spread cooked ground turkey mixture on top of green beans
Add layer of mashed potatoes to top and bake for 15 minutes at 350 degrees
After 15 minutes, turn oven to broil and cook until potatoes begin to brown around the edges (about 3-5 minutes)
Let cool for 2 minutes before serving so it doesn't fall apart and enjoy!