In a food processor, chop mushrooms into extra fine pieces. Saute on medium heat with vegetable oil for 15 minutes. Return to food processor.
Add beans, spices, salt, and egg; process until fully combined. Liberally coat a large nonstick baking pan with vegetable oil. Form 4 patties, then gently place onto baking sheet. Bake for 10 minutes, flip with a spatula, and bake for 10 more minutes.
Lentil Carrot Burgers