1 lb. ground beef
1 small onion, chopped
2 garlic cloves, minced
1 (10 1/2 oz.) can beef gravy
1 cup frozen mixed veggies
1/4 tsp. Worcestershire sauce
salt and pepper to taste
2 1/2 cups mashed potatoes
You could add some butter cracker bread crumbs or cheese to it for a little extra if you want.
Find it online: https://www.livingonadime.com/leftover-shepherds-pie-recipe/