Lunch: Double Cheeseburgers with Caramelized Onions

This recipe includes superfoods such as:

Lemon

Health benefits of Double Cheeseburgers with Caramelized Onions

Lemons can help to prevent oxidative damage to the body, which women with PCOS are often susceptible to. Lemons are also rich in vitamin C, flavonoids, and other antioxidants. They can potentially support the immune system and have other health benefits. Lemons also have a low glycemic index, so they should not cause a rapid rise in blood sugar when consumed in natural form.

Ingredients

2 tablespoons unsalted butter
1 sweet onion, thinly sliced
Salt
Freshly ground black pepper
1/2 cup mayonnaise
1 tablespoon fresh lemon juice
1 small garlic clove, mashed
1 1/2 teaspoons smoked paprika
1/2 teaspoon cayenne pepper
1/4 cup extra-virgin olive oil
1 tablespoon chopped cornichons
1 tablespoon chopped flat-leaf parsley
6 ounces shredded Gruyère cheese
6 ounces shredded sharp cheddar cheese
3 pounds ground beef chuck, shaped into twelve 1/2-inch-thick patties
Toasted brioche buns, for serving
Bread-and-butter pickles, for serving
Shredded lettuce, for serving

Instructions

In a skillet, melt the butter. Add the onion, cover and cook over moderately low heat, stirring, until softened, 15 minutes. Uncover and cook over moderate heat, stirring, until the onion is caramelized, 20 minutes; add water if necessary to keep the onion from burning. Season with salt and pepper.
In a small bowl, whisk the mayonnaise with the lemon juice, garlic, paprika and cayenne. In a steady stream, whisk in the olive oil and season with salt and pepper. Fold in the cornichons and parsley.
Heat a griddle. In a bowl, mix the Gruyère and cheddar. Season the patties with salt and pepper and cook over high heat for 2 minutes. Flip the burgers and top with the mixed cheeses. Carefully cover the burgers with a large inverted roasting pan and cook for 2 minutes longer, until medium-rare and the cheese is melted.
Spread the paprika mayonnaise on the bottom halves of the buns and stack 2 patties on each. Top with the onions, pickles and lettuce and serve.