A veggie burger made from pinto beans and walnuts flavored with lime juice and zest as well as cumin and cayenne. Lime mayonnaise heightens the flavor of these delicious burgers!
Note: Burgers need to be chilled for 10 minutes before cooking so plan your time accordingly.
Cook 1/2 of the onion (3/4 cup) with 1/4 teaspoon salt in oil in a small heavy saucepan over medium heat, stirring occasionally, until golden, 5-7 minutes.
Add bulgur and water and cook, covered, over low heat until water is absorbed, 15-18 minutes.
Transfer to a bowl and stir in beans and soy sauce.
Pulse bulgur mixture, walnuts, garlic, parsley, cumin, cayenne, a rounded 1/4 teaspoon salt, 1/2 teaspoon pepper and remaining onion in a food processor until finely chopped.
Form rounded 1/2 cups of the mixture into 4 (3 1/2" diameter) patties.
Chill at least 10 minutes.
Brush patties all over with oil.
Brush oil on grill pan and cook on each side until golden brown, about 8-10 minutes total. (May also be cooked on outside grill if desired).
Mix together lime zest, lime juice and mayonnaise. Spread lime mayonnaise on bun or bread and add burger. Enjoy!