Preheat over to 375F. In a large skillet over high heat, brown the Wahlburgers Beef and drain fat. Stir in condensed cream of mushroom soup, skim milk, garlic salt and green beans.
Pour mixture into a medium-sized casserole dish and layer with the tater tots.
Bake in preheated over for about 30 minutes, or until tater tots are browned and crispy.