Preheat the oven to 325 degree F. Spread the cooked black beans evenly on baking pan and bake for 15 minutes until slightly dried out. This is mainly done to avoid any mushy burger.
2 cups Black beans
Heat olive oil in a pan. Add onion and garlic cloves and saute till onions become translucent.
1 tablespoon Olive oil, 1 medium Onion, 4 cloves Garlic cloves
Add bell pepper and cook till it becomes soft. Switch off the flame. Use paper-towels to blot and remove any excess moisture. Add garlic powder, chile powder, salt to taste. Mix well.
½ medium Green bell pepper, ½ teaspoon Garlic powder, ½ teaspoon Red chile powder, Salt
In a food processor, add roasted cashews and pulse till you get small chunks.
½ cup Cashews
In a large bowl, add cooked onion mixture, roasted cashews, black beans, cheese - and mash using a fork leaving some chunks of black beans. You can even pulse black beans in food processor and add it to the mixture. Make sure you leave few chunks of black beans.
½ cup Parmesan cheese
Now add breadcrumbs, egg, tomato ketchup, salt to taste and mix everything together till well combined.
½ cup Bread crumbs, 2 tablespoon Tomato ketchup, 1 large Egg, Salt
This mixture can be used immediately or stored in air tight container in refrigerator for upto 3 days.