Southwestern Pinto Bean Burger Recipe (Hearty + Easy!)

0 To prepare burgers, combine the first 9 ingredients in a large bowl or food processor. If you use a food processor, you don't have to dice the onion or mince the jalapeno pepper ahead of time. (This saves on cutting time if you have a good food processor). Transfer to a large bowl, and mix in the egg.
1 Put pinto beans and corn in the food processor, and then add to the mixture in the bowl. Alternatively, you can add the pinto beans/corn to the bowl and partially mash with a fork or potato masher.
2 Divide bean mixture into 4 equal portions, shaping each portion into a 3 1/2-inch patty, and refrigerate for 10 minutes. 
3 Heat 1 tablespoon extra-virgin olive oil in a large skillet over medium-high heat. Add patties to pan, and cook 5 minutes on each side. Reduce to medium heat, cook an additional 5 minutes (flipping the burger patty once in between) to get a nice caramelized crust. Transfer burgers to a plate lined with paper towels.
4 Now it’s time for assembly! Place patties on bottom halves of buns; top each patty with 1-2 tbsp ketchup or bbq sauce, red onion slices, roma tomatoes, baby spinach leaves, and top half of bun.