This burger was created as an ode to Baltimore Ravens fans for Super Bowl XLVII. A Maryland crabcake topped with a caper aioli, shredded romaine, and Old Bay frizzled onions is the perfect way to treat a Maryland fan right.
Combine all of the ingredients together and mix well. Chill until ready to serve.
In a large bowl, mix all of the ingredients together. Using ½ of the batter, form into balls.
In a bowl, add the onions to the milk and let them soak while you prepare the breading. Mix together all of the dry ingredients. Drain the onions from the milk and dredge in the seasoned flour.
Set 2 medium-sized skillets over high heat and fill with about 2-3 inches of vegetable oil. Heat to 375 degrees. Fry the onions in one skillet and the crabcakes in another until both are golden brown, about 5 minutes for each.
To assemble the burgers, place each crabcake on a bun and top with the caper aioli, shredded lettuce if desired, and the frizzled onions.