Mom's Meatloaf (GF)

Name: Mom's Meatloaf (GF)
Cuisine: American
Ingredients: 4 lbs hamburger; 3 pieces bread, broken up; 2 packets brown sugar oatmeal; 3 eggs; Leftover Rao's marinara sauce (in fridge); 1/2 c dried onion; 1/2 c brown sugar; 3/4 c milk; 1/2 c worcestershire sauce; 1 tspn curry; 2 tspn garlic; 1 tspn allspice; 2 tspn chili powder; 2 tspn oregano; 1/2 tspn sage; 2 tspn salt; 1 tspn pepper; 1/2 c ketchup; 2 tbsp brown sugar