Into a medium bowl, add all ingredients of the sauce and stir until combined. Reserve.
Caramelized Onion and Bacon
Cook your chopped bacon in a large skillet over medium-light heat until crisp. Stir in the sliced onion, season with a little salt and pepper, and cook until beautifully caramelized. Transfer to a plate and reserve.
To keep it warm, cover with foil.
Homemade Patties
Now you need to cook your meat patties. Take your ground beef and form 4 balls; season them evenly with salt and pepper.
Every ball must be around of 160 gr
In a large skillet over high heat, spray with oil, add your meatballs, and press them lightly using a spatula to form a 3/4 inch flat Burger.
I do not want them to flatten like a smashed burger. I want them to cook medium-rare to keep the meat patty juicy on the inside, but still crispy and golden on the outside. If you prefer a different level of doneness, you can quickly reference my burger temperature table to adjust your cooking time exactly to your liking.
Cook them about 2 min on the first side using a spatula turn them and cook them 2 min on the other side.
Place two slices of cheddar cheese directly on top of each meat patty in the skillet. Add 1/2 tablespoon of water to the pan, cover with a lid.
This helps the cheese to melt on the meat patty. Remove from the heat once the cheese is melt.
Assembling The Burger
Halve your brioche Bun Burger and toast the inside of the bun with a plancha or pan. Place all your buns open side up on a tray or on a plate and spread. Divide the Burger Sauce evenly among all the buns.
You're going to toast the inside part of each bun until lightly golden and crispy.
Divide the onion and bacon mixture and spread a little bit at the bottom part of your burger.
Add crisp lettuce leaves to the top half of your bun, and carefully place a large, fresh tomato slice right on top of the lettuce.
Using a spatula, carefully lift each cooked beef patty and place it right onto the bottom half of your toasted brioche bun, directly over that warm onion and bacon mixture.
Carefully flip the top half of the bun over the meat patty to close your burger. Serve immediately and enjoy!
Notes
Storage, Reheating & Make Ahead
If you have leftovers or want to prep your meals for the week, these patties keep wonderfully.
Make Ahead: You can cook your bacon and onion topping up to two days in advance and keep it in the fridge. You can also form your raw meat patties the morning of your dinner. Just keep them well covered in the fridge so the fat stays ice cold.
Storage: Store any cooked, leftover patties in an airtight container in the fridge for up to three days. Keep the buns and wet toppings stored separately so nothing gets soggy.
Freezer: To freeze raw patties, layer them between sheets of parchment paper and store them in a freezer-safe bag or container for up to three months. Thaw them overnight in the fridge before cooking.
Reheating: Warm your cooked patties gently in a skillet over low heat. Add a tiny splash of water to the pan and cover with a lid so they steam and do not dry out.
Happy cooking! Xx
Shape your raw patties half an inch wider than your buns. Beef shrinks as it cooks over high heat, so this extra width ensures the finished patty matches the size of your bread.