Step 1

In a small bowl, whisk together all secret sauce ingredients until smooth

Step 2

Cover and refrigerate until use

Step 3

Can be stored in an airtight container for up to a week.Heat olive oil in medium sized, heavy bottom sauce pan over medium heat

Step 4

Add the thinly sliced onion rings and sauté over medium-low heat until caramelized

Step 5

About 25-35 min

Step 6

If they start browning too quickly, lower the heat

Step 7

Once finished, set aside.In a large bowl place ground beef, eggs, grated onion, garlic, Worcestershire, mustard, sea salt and pepper

Step 8

Using your hands (or stand mixer) mix the meat together until completely combined

Step 9

Divide the meat into four equal parts and form it into patties about ⅓ inch thick

Step 10

Set aside on parchment paper.Heat grill on high for 10 min.Season each patty with a little salt and pepper and place on the hot grill

Step 11

Reduce heat to medium and close the lid

Step 12

Cook for 5 minutes

Step 13

Flip the burger patties and cook for another 3-5 minutes, or until center is just barely pink (to your liking)

Step 14

Add the cheese to the patties, close the lid and allow it to melt

Step 15

While the cheese is melting, use your hot grill to toast your buns!To prepare the cheeseburgers, add a generous amount of secret sauce to both top and bottom of the toasted bun

Step 16

Add the beef patties, then layer on the lettuce, onions and tomato

Step 17

Serve with pickles