Best-Ever Black Bean Burgers

Ingredients

• Vegan or regular mayonnaise
• Sliced avocado
• Sliced red onion
• Lettuce
• Toasted hamburger buns
• Vegetable oil, for cooking
• 1 tsp. Ground cumin
• 1 tsp. Chili powder
• 2 tsp. Smoked paprika
• 2 cloves Garlic, chopped
• 1/4 cup Loosely packed cilantro or parsley leaves
• 1/2 Avocado, chopped
• 1/2 cup Old-fashioned oats
• Freshly ground black pepper
• Kosher salt
• 1 tbsp. Extra-virgin olive oil
• 1/2 Yellow onion, thinly sliced
• 1 package Shiitake mushrooms, roughly chopped
• 2 cans Black beans, drained and rinsed