Sautee diced onion in olive oil until soft (approx. 5 minutes).
Combine the remaining ingredients in a large mixing bowl and add in the cooked onions. Form into small burger patties.
Lightly oil pan or griddle and cook burgers about 6 minutes on each side.
Assemble on dinner roll or small bun with lettuce, tomato and chili mayo.
For mini buns: Use Rhodes frozen multi-grain roll dough, following directions on package.