Ultimate Wagyu Double Cheeseburger
Caramelized Onions

Experience the ultimate Wagyu double cheeseburger at home. Featuring two juicy beef patties, sweet jammy onions, and a classic tangy burger sauce on a toasted brioche bun.

Ingredients

• 1 white onion
• 1 tbsp cooking oil
• 1 tbsp soy sauce
• 2 tbsp butter
• 1 tbsp apple cider vinegar
• 1 tbsp white sugar
• 1 tbsp mayonnaise
• 1 tbsp ketchup
• 1 tbsp yellow mustard
• 1 tbsp sweet salad dressing
• 2 burger buns
• 400 g ground Wagyu beef
• 1 egg (beaten)
• 4 slices yellow cheese
• 2 leaves lettuce
• 2 thick slices tomato
• optional cooked bacon strips

Instructions

1. 1Slice the onion

   

   Start by preparing the base of the burger flavor profile. Take a white onion, peel it, and slice it into even strips. Cutting them consistently ensures they will cook down and caramelize evenly.

   Tip: If cutting onions makes your eyes sting, try chilling the onion in the refrigerator for 30 minutes before slicing.
2. 2Begin cooking the onions

   

   Add a small amount of oil to a stainless steel frying pan and place it over medium-low heat. Add the sliced onions and stir gently. Avoid using high heat, as the goal is to slowly draw out the moisture and soften the onions without burning them.

   Tip: Stainless steel is great for caramelizing as it allows the onions to build a fond on the bottom of the pan, which translates to deeper flavor.
3. 3Season the onions

   

   As the white onions soften and release their moisture, pour in the soy sauce and apple cider vinegar, then add a knob of butter. Stir gently to incorporate these ingredients, creating a savory and tangy base that will quickly develop a gelatinous texture.

   Tip: The combination of soy sauce and apple cider vinegar provides a complex umami and tangy profile that balances the sweetness of the onions.
4. 4Caramelize the onions

   

   Once the onions develop a thick, glazed coating from the initial liquids, stir in the white sugar. Continue to slowly stir-fry over low heat until the onions become deeply browned, beautifully fragrant, and reach a sweet, translucent, jam-like consistency.

   Tip: The addition of sugar helps accelerate the caramelization process, while the vinegar adds a touch of acidity to balance the sweetness.
5. 5Prepare the sauce ingredients

   

   While the onions are cooking, prepare the classic burger sauce. In a small bowl, combine equal spoonfuls of mayonnaise, ketchup, yellow mustard, and sweet salad dressing. This combination provides a perfect balance of savory, sweet, and tangy flavors.

   Tip: Using a sweet salad dressing alongside the mayonnaise adds an extra layer of sweetness that mimics famous fast-food burger sauces.
6. 6Mix the burger sauce

   

   Use a spoon to thoroughly mix the condiments together until the sauce is completely smooth and uniform in color. Set the sauce aside so the flavors have a few minutes to meld together before assembling the burger.

   Tip: This versatile sauce is not just for burgers; it also makes an excellent dipping sauce for french fries or onion rings.
7. 7Toast the burger buns

   

   Place the burger bun halves cut-side down into a pan with melted butter over medium-low heat. Use your hands to gently press them down, ensuring they absorb the butter and make even contact with the heat for a uniform toast.

   Tip: Toasting the bread is crucial; it adds flavor and creates a crisp layer that prevents the bread from becoming soggy once the sauce and meat are added.
8. 8Check for a golden crust

   

   Lift the buns to check the progress. You are looking for a beautiful, golden-brown caramelized surface. This layer not only adds a pleasant crunch but also enhances the aroma and sweetness of the bread.

   Tip: Keep the heat low during toasting to achieve a deep golden color without burning the edges of the bun.
9. 9Sear the Wagyu patties

   

   Place the thick Wagyu beef patties into the pan with a little oil. Pan-fry them over medium heat until a deep, caramelized crust forms on both sides. The high fat content of the Wagyu will render out, ensuring the meat remains incredibly tender and juicy.

   Tip: For the best result, ensure the meat is thawed but very cold. Cooking from frozen can lead to uneven textures in high quality beef.
10. 10Melt the cheese slices

    

    Once the patties are flipped and nearly finished, place a square slice of yellow cheese on top of each. Cover the pan for a moment to allow the steam to melt the cheese until it drapes smoothly over the hot meat.

    Tip: Adding a tiny splash of water to the pan before covering will create a steam boost that melts the cheese perfectly in seconds.
11. 11Add the lettuce layer

    

    Place a fresh, crisp leaf of green lettuce onto the bottom half of the toasted bun, which has already been spread with your burger sauce. The lettuce provides a refreshing crunch and serves as a barrier to keep the bottom bun from getting soggy from the meat juices.

    Tip: Ensure the lettuce is patted completely dry after washing; any remaining water can thin out your sauce and make the bun mushy.
12. 12Add fresh tomato slices

    

    Layer thick slices of fresh red tomato over the bed of lettuce. The tomato adds a juicy acidity and a refreshing texture that cuts through the rich, savory flavors of the Wagyu beef and melted cheese.

    Tip: Use vine-ripened tomatoes for the best flavor, and pat them dry with a paper towel before assembly to prevent the burger from getting soggy.
13. 13Stack the cheesy Wagyu patties

    

    Carefully stack the two seared Wagyu beef patties with melted cheese onto the tomato layer. Spoon a generous amount of your warm caramelized onions over the top patty and crown it with the toasted top bun to complete your ultimate double cheeseburger.

    Tip: Serve this burger immediately while the cheese is gooey and the onions are warm for the best dining experience.

Storage & Reheating

Burn It Off

Frequently Asked Questions