Pennywise Steak - cooking recipe

Ingredients

1 1/2 lb. ground beef
2 Tbsp. milk
1/2 tsp. salt
1/2 tsp. pepper
2 Tbsp. grated onion (or to taste)
2 Tbsp. prepared mustard
2 Tbsp. parsley flakes
6 Italian or French rolls

Preparation

Mix lean ground beef with onion, mustard, milk, parsley, salt, and pepper.
Spread thinly on cut halves of rolls overlapping a little down the sides to allow for shrinkage.
Broil till top is nice and brown.