INGREDIENTS
1 balls
meatballs
1 serving
lean ground beef
1 serving
breadcrumbs
1 large
egg
1 serving
gruyere cheese
1 serving
worcestershire sauce
1 leaves
fresh thyme leaves
1 clove
garlic clove
1 serving
salt and pepper
1 serving
onions
1 serving
butter
1 serving
yellow onions
1 serving
beef broth
1 serving
worcestershire sauce
1 serving
dijon mustard
1 leaves
fresh thyme leaves
1 serving
gruyere cheese
1 serving
salt and pepper
1 lb
1/4 cup
1
1/2 cup
2 tsps
1 tsp
1
2 tbsps
2
1 cup
2 tsps
1 tsp
1 tsp
1/2 cup