Juicy French Onion Soup Burgers

These French onion soup burgers are my go-to when I want the comforting flavors of classic onion soup but crave something handheld with a luxurious twist. You get juicy beef patties mixed with savory onion soup seasoning, golden caramelized onions piled high, and a creamy dijonnaise sauce nestled into pillowy brioche buns. They hit all the right notes for a hearty lunch or a showstopper dinner with minimal effort.

My family often crowds around hoping for seconds The burst of flavor from the caramelized onions and sauce always wins them over

Ingredients

• Ground beef Look for an 80 percent lean blend for the juiciest burgers
• Yellow onion Sweetness builds the flavor and caramelizes beautifully Choose a firm onion with shiny skin
• Onion soup mix This gives a shortcut to deep savory notes Pick a brand with the least fillers or make your own
• Worcestershire sauce Adds umami and a subtle tang Choose one with clean ingredients for best taste
• Provolone cheese This melts into the patty for gooeyness Find it at the cheese counter for smooth melting quality
• Dijonnaise sauce Brings a creamy kick Use a quality prepared version or stir together mayo and a good Dijon mustard
• Brioche burger buns Soft and rich so they soak up juices well Choose fresh bakery style buns for best results

Step-by-Step Instructions

Caramelize the Onions

Start by thinly slicing the yellow onion. Add a splash of olive oil to your frying pan and place it over medium heat. Add onions and let them gently cook while stirring every few minutes. Watch for them to slowly turn golden and jammy which normally takes twenty to thirty minutes. The lower heat and patience here transforms the onions into deeply sweet ribbons.

Mix and Shape the Patties

While the onions cook combine your ground beef with the full packet of onion soup mix and the Worcestershire sauce in a medium bowl. Using clean hands mix until evenly blended trying not to overwork. Shape the meat into four thick patties around one inch each. With your thumb press a slight dimple in the center this stops the patties from puffing up weirdly as they cook.

Cook the Burgers

Set your pan to medium high heat and lay down the burgers. Let them sear undisturbed for three to five minutes until you see juices pooling on top. Flip and cocver each with provolone cheese. Cover pan so the steam helps everything melt. Three to five minutes more should do it. Use a meat thermometer if you want to check the temp for safety and juiciness.

Toast the Buns

Slice the brioche buns and brush the cut sides lightly with olive oil. Place face down in a pan on medium heat for a few minutes until the edges turn golden and the centers are warm and soft.

Assemble and Serve

Generously spread dijonnaise sauce onto the bottom bun. Nestle the cheesy patty on this sauce then heap on a spoonful of the caramelized onions. Cap with the top bun. Serve while everything is hot and fresh.

Pin

Whenever I make these my favorite part is sneaking a little caramelized onion from the pan just before assembling Each time reminds me of cozy Sunday afternoons with my siblings lined up for a sample of the sweet onions

Storage Tips

Place leftover burgers and onions in airtight containers and store in the fridge. Burgers will stay fresh for up to three days and onions for up to a week. If you have extra buns keep them in a resealable bag for a few days or pop them in the freezer to retain their softness. For best results reheat burgers in a pan rather than a microwave to bring back their juicy texture.

Ingredient Substitutions

If you cannot find provolone cheese use Swiss or gruyère for a similar melt and tang. Brioche can be swapped for potato rolls or any soft burger bun you have. For the onion soup mix try making your own blend with dried onions garlic powder and a touch of salt.

Serving Suggestions

Round out your burger meal with crispy oven fries or a green salad. Consider adding a few pickles or a slice of tomato on top for some crunch. These burgers also pair great with simple grilled veggies during summer gatherings.

A Bit of Burger History

Inspired by the flavors of classic French onion soup this recipe is a fun American spin on French comfort food. The combination of hearty beef and caramelized onions mirrors the beloved bistro soup but packs it all between two fluffy buns so you get those deep savory flavors in a fresh new format.

Recipe FAQs

→ How do I achieve fully caramelized onions?

Cook sliced onions slowly over medium heat with olive oil for 20-30 minutes, stirring often until deeply golden and soft.

→ Can I substitute the provolone cheese?

Yes, Swiss, Gruyère, or mozzarella are excellent alternatives that also melt nicely and complement the onion flavors.

→ What is dijonnaise sauce made from?

Dijonnaise combines mayonnaise and Dijon mustard for a creamy, tangy spread perfect for burgers.

→ How can I prevent burger patties from shrinking?

Press a small dimple into the center of each patty before cooking. This helps them keep their shape and size.

→ Can I use a grill instead of a frying pan?

Absolutely. Both methods work well. Ensure the burgers are cooked to your preferred doneness for the juiciest result.