1) In a large bowl, finely mash the black beans with a potato masher or your hands. Add the shallots, red pepper flakes, smoked paprika, Worcestershire, hot sauce, coriander, egg white, flour, salt and pepper. Mix well with a wooden spoon. Form into four patties and arrange on a platter.
2) In a large saute pan over medium-high heat, add the oil. Sear patties for 3 to 4 minutes on each side until they have a nice crust. Remove the patties to a paper towel-lined platter.
3) Assemble the sandwiches with a patty, some spinach, roasted red peppers and red onion on the multigrain baps.
Top with a good drizzle of Szechuan tomato dressing and serve.
Szechuan tomato dressing:
In a small bowl, add the Szechuan sauce, tomatoes and coriander. Whisk in the olive oil and season with salt and pepper, to taste. Use as a dressing for the black bean sandwiches.