Bacon-Cheeseburger Potato Pie

1 1/2 lb. ground beef
1/2 cup plain bread crumbs
1/4 cup finely chopped onion
1/4 cup ketchup
2 Tbls. mustard
1/2 tsp. salt
3 slices bacon
1 1/4 cups water
3 Tbls. butter
1/4 tsp. garlic salt
3/4 cup milk
2 cups mashed potato flakes
1 cup shredded cheddar cheese
1 medium tomato, chopped
2 green onions, sliced

Heat oven to 375 degrees. In medium bowl, combine ground beef, bread crumbs, onion, ketchup, mustard and salt; mix well. Press mixture in bottom and up sides of ungreased 9-inch pie pan. Bake at 375 degrees for 15 minutes. Meanwhile, cook bacon until crisp. Drain on paper towel; cool and crumble. In medium saucepan, combine water, butter and garlic salt. Bring to a boil. Remove from heat. Add milk. With fork, stir in potato flakes. Stir in 1/2 cup of the cheese. Remove partially baked beef crust from oven; pour off any drippings. Spoon potato mixture evenly into crust. Return to oven; bake an additional 10 to 15 minutes or until beef is thoroughly cooked and potatoes are heated. Remove pie from oven. Top with tomato, remaining 1/2 cup cheese and crumbled bacon. Return to oven; bake an additional 5 minutes or until cheese is melted. Remove from oven; top with green onions. Let stand 10 minutes. Cut into wedges to serve. Enjoy!