Balsamic Onions:
Thinly slice yellow onions.
Heat med saute pan over med/low heat and add 1 TBSP butter and 1 TBSP olive oil. Add sliced onions.
Add 1 tsp each salt and pepper.
Cook over med/low heat for approx. 20-30 minutes or until onions are translucent and tender, and just beginning to turn a light golden brown.
Add sugar and balsamic vinegar and continue to cook over low heat for another 20 minutes, until onions are dark in color and sweet.
Burger:
Season meat with salt and pepper. Divide into equal size patties (size depends on bun size).
BBQ as you would normally BBQ a burger. Top with 2 slices of american cheese.
To prepare DaBomb Burger:
Lightly toast buns on buttered grill pan.
Generously spread Donkey Sauce on bottom bun, add burger, add shredded lettuce, and tomato slice. Top with a balsamic onions (don't be shy, they're yummy).
Spread more Donkey Sauce on top bun and place on top of bottom burger stack.
Get lots of napkins and enjoy!!