In a large bowl, add half of the dried black beans. Mash them well with a fork until mostly smooth. Leave the other half of the beans whole for texture.
Mix all ingredients together using your hands or a sturdy spoon until just combined. Do not overmix.
Divide the mixture into four equal portions. Form each portion into a firm patty, about 3/4 inch thick. Press the edges firmly to seal.
Place the formed patties on a plate lined with parchment paper. Refrigerate for at least 30 minutes. This firms them up for cooking.
Cook the patties using your preferred method: Pan-fry in a lightly oiled skillet over medium heat for 5-7 minutes per side, or bake at 375°F (190°C) for 15 minutes, flipping halfway through.
Notes
For an extra firm patty, you can pulse the oats in a food processor first to create a coarse flour before adding them to the mix.
If you prefer a stronger smoky flavor, increase the smoked paprika to 1 1/2 teaspoons.
These patties freeze well after the chilling step. Place parchment paper between layers before freezing.