INGREDIENTS
3 tbsp
butter
1 lb
onions (peeled & thinly sliced)
1/2 cup
beef broth
1/4 cup
beer
2 tsp
brown sugar
1/4 tsp
salt
1/8 tsp
black pepper
1/2 cup
mayonnaise
3 tsp
dijon mustard
1 1/2 tsp
prepared horseradish
1 1/3 lb
ground beef
2 tbsp
beer
3
garlic cloves (minced)
1 tsp
salt
1/2 tsp
black pepper
4
hamburger rolls (each split in half)
4
slices Swiss or Gouda cheese