1 pound hamburger
1 medium onion, sliced
3-4 fresh mushrooms sliced (Optional)
2 Tablespoon butter
12 slices of bread
softened butter or butter spread
6 slices of cheese
In a skillet over medium heat melt butter and add the onions, mushrooms and a pinch of sugar. Saute until golden brown, stirring occasionally It takes about 20 minutes. Remove from heat.
While onions are cooking, form your hamburger in to patties to fit the size of your bread. Season with salt and pepper. Cook patties in a separate skillet until they are cooked through.
Butter one side of each slice of bread. On medium heat use a clean skillet. Place the butter side of the bread facing the pan, add the slice of cheese, a bit of the onion mixture, the hamburger patty and the other slice of bread with the butter side facing out. Grill until golden brown and then flip and toast the other side. Cook until the cheese is melted and bread is toasted.
Made 6 medium size sandwiches
Recipe Source - Once Crazy Cookie