2-Bean Patty Burgers

Ingredients

• For the onion and spinach mixture:
• 1 tablespoon vegetable oil
• 1 teaspoon butter
• 1 red onion, diced
• 2 ounces of baby spinach
• For the mashed bean mixture:
• 3 ounces of canned white beans
• 3 ounces of canned red beans
• 1 red chili, chopped
• pepper
• salt
• ¼ cup breadcrumbs
• 1 egg
• 2 tablespoons of feta cheese
• 2 burger buns
• lettuce leaves for garnishing
• fresh basil leaves for garnishing