INGREDIENTS
2 tbsp
butter
3
small onions
2 lb
ground beef
2 tbsp
beef bouillon
1 tbsp
Worcestershire sauce
Kosher salt and black pepper,
12
slider buns
12
slices provolone cheese
6 tbsp
butter
1 tbsp
thyme
1 tsp
onion powder
1 tsp
minced garlic
2 tbsp
poppy seeds