French Onion Burger

By: S. Rosen's Test Kitchen

This elevated burger, inspired by classic French Onion Soup, is sure to impress guests at your next barbecue! A juicy burger topped with melty Swiss cheese, caramelized French Onions, and zesty Dijonnaise on a robust Onion Bun.

Ready In

Total Time: 40+ minutes

Prep Time: 10 minutes

Cook Time Time: 30+ minutes

Servings

1 Burger

Ingredients

Ingredients per sandwich:

S. Rosen’s Onion Buns

Burger patty, seasoned with salt

1 Slice Swiss cheese

French Onions

Dijon mustard

Mayo

Ingredients for French Onions:

2 Yellow Onions sliced.

1 Tbsp. Olive oil in the cast iron pan

1 Tbsp. Butter

1 Tbsp. Balsamic vinegar

Directions

1. Heat a medium sized cast iron skillet over medium heat on the grill with 1 Tbsp. olive oil. Once heated, add onions and stir regularly. Cook until reduced by half (20-30 minutes). Add 1 Tbsp. Balsamic to deglaze pan, then melt 1 Tbsp. butter to finish. Remove from heat.

2. Grill the burger until you reach desired doneness. Add Swiss cheese before removing from the grill.

3. Assemble burger starting with the patty, following with French onions, and topped with top bun smeared with 50/50 ratio of Dijon mustard and mayo.