Make the garlic mayo dressing by combining the mayo, lemon juice, minced garlic, and a pinch of salt and pepper.
Make the burger stuffing by combining chopped sundried tomatoes with grated parmesan and goat cheese.
Take the 8 oz of beef and divide it into 4 equal patties (about 2 oz each) and shape them with your hands to be slightly bigger than your burger buns.
Season the patties with salt, black pepper, and garlic powder.
Spoon half the mixture on one patty and the half on another patty.
Cover with the other two patties and pinch the sides to seal them shut.
To a pan, over medium-high heat, add 1 tbsp of oil and cook the patties for about 4-5 minutes on the first side.
Flip and cook for another 4-5 minutes on the second side until the burger is done. If adding cheese, add it here 2 minutes before your burger is done.
(Optional) Toast the buns in a pan for a couple of minutes.
Assemble the burger: toasted bun, stuffed burger patty, tomato, arugula, and lemon-garlic mayo.