Dad'S Half-Hamburgers - cooking recipe

Ingredients

1 lb ground chuck
1 egg, large
3/4 cup yellow mustard
1 1/2 tablespoons minced onions, dried
1/8 teaspoon salt
1/8 teaspoon pepper
12 hamburger buns, separated into halves

Preparation

Mix the ingredients in a bowl; \"moosh\" by hand - clean hands, if you please - until spreadable.
Spread mixture hamburger buns; both bottoms and tops.
Place on an ungreased cookie sheet.
Broil on second rack of oven for 3 - 5 minutes.
Check center with small knife for doneness.
Times may vary slightly from oven to oven.