Using a cutting board, chop a yellow onion as finely as possible. Measure 1/4 cup and place in a medium mixing bowl.

Add remaining ingredients to bowl and mix thoroughly. Allow meat mixture to rest 1-2 hours, or overnight.

Using a scale, measure out 4 oz of meat mixture. Press into a patty, and cook over medium heat, 2 minutes per side.

Use cooked patties in a breakfast sandwich or as a side meat with pancakes or waffles.