Combine mayonnaise and chipotle, set aside.

Dry the beans well after washing, extra moisture will keep the burgers from sticking.

In a medium bowl, mash beans with a fork until thick and pasty.

In a food processor, finely chop bell pepper, cilantro, onion, and garlic, then add oats, then eggs and spices.

Then stir into mashed beans.

Divide mixture into four patties (using slightly oiled hands helps) and place them onto a flat surface covered with wax paper. (If it's too wet, chill the mixture 30 minutes in the refrigerator or add another tablespoon of oats)

Freeze at least 2 hours before cooking or keep frozen until ready to cook.

Heat a lightly sprayed skillet to medium heat and cook frozen burgers about 7 minutes on each side.

If grilling, preheat grill over medium heat, and lightly oil a sheet of aluminum foil; grill 7-8 minutes on each side or bake in the oven at 375°F on a lightly oiled baking sheet.