Caramelized Onion Swissburgs
with Roasted Garlic Horseradish Aioli & Seasoned Potato Wedges
- Milk
- Eggs
- Soy
- Wheat
Looking to up your burger game? This version will blow your mind. The spiced beef patties are seared until browned, topped with melty Swiss cheese and buttery caramelized onion, and stuffed into toasted potato buns. Of course, no burger would be complete without a decadent sauce—this one combines mayo, roasted garlic, and wasabi paste (aka horseradish) to create a punchy spread. Pro tip: The aioli also goes great with the crispy potato wedges on the side.
Ingredients
12 ounce
Yukon Gold Potatoes
1 clove
Garlic
1 unit
Yellow Onion
1 tablespoon
Fry Seasoning
10 ounce
Ground Beef
2 slice
Swiss Cheese
(Contains: Milk)
4 tablespoon
Mayonnaise
(Contains: Eggs)
1 teaspoon
Wasabi Paste
2 unit
Potato Buns
(Contains: Milk, Eggs, Soy, Wheat)
Not included in your delivery
Salt
Pepper
5 teaspoon
Cooking Oil
1 teaspoon
Sugar
Nutrition Values
Utensils
Cooking Steps
• Adjust rack to top position and preheat oven to 425 degrees. Wash and dry produce. • Cut potatoes into ½-inch-thick wedges. Peel garlic; place in the center of a small piece of foil. Drizzle with oil and season with salt. Cinch into a packet. Halve, peel, and thinly slice onion.
• Toss potatoes on a baking sheet with a drizzle of oil, half the Fry Seasoning (you’ll use the rest later), salt, and pepper. Place garlic foil packet on same sheet. • Roast on top rack until potatoes are browned and crispy and garlic is softened, 20-25 minutes for potatoes and 15-20 minutes for garlic.
• Meanwhile, heat a large drizzle of oil in a large pan over medium-high heat. Add onion; cook, stirring occasionally, until browned and softened, 8-10 minutes. • Stir in 1 tsp sugar (2 tsp for 4 servings) and a splash of water; cook until onion is caramelized and jammy, 2-3 minutes more. Season with salt and pepper. • Turn off heat; transfer to a medium bowl. Wipe out pan.
• While onion cooks, in a large bowl, combine beef*, remaining Fry Seasoning, salt (we used ¾ tsp; 1½ tsp for 4 servings), and pepper. • Form into two patties (four patties for 4), each slightly wider than a burger bun. • Once onion is done, heat a drizzle of oil in same pan over medium-high heat. Add patties and cook to desired doneness, 3-5 minutes per side. • In the last 1-2 minutes of cooking, top patties with Swiss cheese; cover pan to melt cheese.
• While patties cook, carefully unwrap foil packet; mash roasted garlic with a fork or finely chop. • In a small bowl, combine mayonnaise, roasted garlic, and wasabi to taste. (TIP: Start with half the wasabi, then taste and add more from there if you like.) Season with salt and pepper. • Halve and toast buns.
• Spread bottom buns with as much aioli as you like (save a bit for dipping if desired). Fill buns with patties and caramelized onion. • Divide burgers and potato wedges between plates. Serve any remaining aioli on the side. TIP: If you have ketchup on hand, serve some on the side for dipping.
Customer reviews
Review summary
Updated on Feb 2026- Flavor: Many loved the caramelized onions and garlic horseradish aioli, which added delicious depth to the burger 🍔.
- Ease of prep: Some found caramelizing onions tricky, noting it takes longer than the recipe suggests. Consider lowering heat after oil is hot.
- Suggestions: Try adding mushrooms, bacon, or fresh toppings like lettuce and tomato for more flavor and texture contrast.
- Portions: Several mentioned the burgers shrink when cooking; consider making thinner patties or ordering the 4-person option for larger burgers.
- Sides: Many wish for vegetable options besides potato wedges, like a side salad, to balance the meal.
Reviews from our home cooks
This meal was delicious! The burger with the added flavors of the caramelized onions, swiss cheese and especially the Roasted garlic Aioli was so special tasting! We honestly felt like we were in a high end restaurant, so patted ourselves on the back a few times:) So delicious and so much fun to make!
I love all of HelloFresh's burgers, but this 1 was 1 of my faves. The sweetness from the caramelized onions mixed with the savoriness and spice from the garlic horseradish aioli was perfect. Yumm!
Personally DOJ it like caramelized onion but that's okay, I left it fresh onion. The aioli spread was fantastic just made the burger so much more delicious. Potatoes were great, at first did not think there would be enough spice but it turn out great. I smeared the wedges around in the olive oil with spice already in it and every potato wedge was covered.
Fantastic burgers! Loved the caramelized onions! The aioli goes great with the potato wedges as well. Nice, big, juicy burgers with great seasoning!
Was very easy to make. I added mushrooms i bought at the store to make them caramelized onion mushroom swiss burgers. No recipe card was included there was a recipe card i did not have ingredients for. Had to look this one up.
Kind of messy to eat but pretty tasty. I believe that I have finally got the technique to make tasty oven potato wedges! I either have not left them in long enough to be cooked through or cut them too thick, but this time they were just right. The garlic mayonnaise on the caramelized onions was really tasty, but messy.
Loved the seasoning for the burgers. Aioli sauce was perfect. Caramelizing the onions took it over the top. I'm dairy free so I had to forgo the Swiss but my husband enjoyed it.
The burger and the wedges were great, but there was an issue with the garlic. Roasted as directed, it disintegrated into black ash. It had a drizzle of oil and was cinched in a foil packet and cooked with the wedges on the top rack, but it was unusable. Fortunately I had a spare clove on hand. As a side note, recipes with garlic cloves often come with really tiny cloves that makes them hard to work with.
I have to say that all of the burger recipes have been pretty top-tier, but I think it was maybe the fact that it tasted them more than the other ones where I wanted something that would just cut through it and to be perfectly honest, the caramelized onions were not the thing. I think I wanted like a pickle or something fresh. But it was a very quick and easy meal, so can't really be mad at it.
Toasting the bun and caramelizing the onion make all the difference! We also really liked the special sauce. Very flavorful ingredients and come together very nicely. I couldn't believe I made a burger that yummy.
