Slice the shallot into thin slices, add olive oil to a pan and sauté the onion until they are golden.
Add the remaining ingredients to a bowl and mix together. Form into 4 burgers.
Use a heavy skillet to cook the burgers. Place the skillet on the stove and and heat the pan. Add the burgers and cook 4-5 minutes on each side to your preferred amount of donness.
To assemble the burger dress 1-2 cups of greens with 1 tsp of oil and vinegar, salt and pepper. Slice the tomatoes and pickle and place on a plate. Add the burger, add some spicy brown mustard and top with the sauted onions,