Spicy Vegan Sloppy Joes

Ingredients

• 6 servings pepper black freshly ground
• 0.5 teaspoon chipotle chile powder 
• 1 pound cremini mushrooms halved
• 1 small bell pepper diced green seeded
• 6  grain hamburger buns whole
• 0.3 cup catsup 
• 6 servings kosher salt 
• 6 servings lettuce shredded red for serving, optional
• 1.8 cups beer light drink what's left in the bottle
• 1 tablespoon olive oil extra-virgin
• 1 large onion diced sweet
• 3 tablespoons tomato paste 
• 0.3 cup walnuts finely chopped

Equipment

• food processor
• frying pan

Directions

1. Pulse the mushrooms in batches in a food processor until finely chopped. Set aside.
2. Heat the oil in a large nonstick skillet over medium-high heat.
3. Add the onions, 1 tablespoon beer and 1/4 teaspoon salt and cook, stirring frequently, until the onions are lightly browned, about 5 minutes.
4. Add the walnuts and peppers and cook, stirring occasionally, until the peppers are crisp-tender, about 3 minutes.
5. Add the mushrooms, 3/4 teaspoon black pepper and chipotle powder and cook, stirring frequently, until the mushrooms are just cooked through, about 5 minutes.
6. Add the remaining beer, the ketchup, tomato paste and 1/8 teaspoon salt and cook while stirring until the sauce is the consistency that you like, about 2 minutes.
7. Spoon the mixture onto each bun.
8. Serve with toppings if desired.