Although we adults loved these prize winning meatballs, my kids hated meatballs of any kind and suffered through seeing them appear on the table regularly, with mashed potatoes for the wonderful gravy. Years later I learned about their creative meatball-avoidance techniques, such as excusing themselves to to go the bathroom where they emptied meatballs out of their pockets and flushed them, or the times they waited for us to leave the room and flung the metaballs into the neighbor's yard so the dog would eat the evidence. After all this great PR you may be hesitant to try them, but I assure you they won a blue ribbon for good reason.
Combine these ingredients for the balls: 1 lb hamburger, 1/2 c bread crumbs, 1/4 c minced onion, 1/2 c. milk,, 1 tsp salt, 1/8 tsp pepper. Shape into balls, brown in 3 Tb butter. Remove from the skillet and keep warm. Pour most of the grease from the skillet.
Make the sauce in the same pan: Melt 1/4 c. butter then add 1/4 c flour and cook for a minute. Then add 1//4 c buttermilk, 1/4 tsp salt, 2 Tb sugar, 1 1/2 tsp dry mustard, 1 beaten egg, 1/8 tsp pepper. Cook and when thick, add meatballs and simmer til flavors are blended.
