Start by preparing your caramelized onions. Heat a tablespoon of olive oil or butter in a skillet over medium-low heat. Add the thinly sliced onions and a pinch of salt. Cook slowly for about 20–25 minutes, stirring occasionally until they’re deeply golden and sweet. While those cook down, prepare the burger patties.

In a large bowl, combine the ground beef with Worcestershire sauce, garlic powder, Dijon mustard, salt, and pepper. Mix gently—just enough to incorporate the seasonings. Divide the mixture into four equal portions and shape them into patties slightly larger than your buns, since they’ll shrink during cooking.

Preheat your grill or skillet to medium-high heat. Once hot, add the patties and cook for about 3–4 minutes per side, depending on thickness and desired doneness. When the patties are nearly done, place a slice of Irish cheddar on each and cover the pan to help the cheese melt.

While the burgers rest, whisk together the sauce ingredients: mayonnaise, Dijon mustard, honey, and lemon juice. Toast the buns until golden and begin assembling.

To build your Irish pub burgers, spread the sauce on both sides of the bun, layer with lettuce, the cheesy burger patty, bacon, caramelized onions, and pickles. Top with the bun and serve immediately.