
Preheat the oven to 200°C (400°F) and line a baking sheet with aluminum foil.
In a large bowl, mash the black beans with a fork or a potato masher.
To the same bowl, mix in the onion, garlic, mustard, cumin, paprika, salt, pepper, and egg.
Add the ground beef and mix thoroughly. Firmly form into 8 burger patties and place onto the baking sheet.
Bake for 15 to 17 minutes. Use a digital food thermometer to check that the burgers have reached an internal temperature of 74°C (165°F).
8 servings