Step 1

In a large skillet, heat 1 tablespoon of the olive oil over medium heat. Add the mushrooms, onion and garlic and sauté until tender and the onions are translucent, about 7 minutes. Stir in the Worcestershire sauce, remove from the heat and let cool briefly.

Step 2

Transfer the mushroom mixture to a large bowl. Add the lentils, breadcrumbs, egg, salt and pepper to the bowl. Stir to combine.

Step 3

Form into four patties and refrigerate for 30 minutes. When ready to cook, in a large skillet, heat the remaining olive oil over medium-high heat. Add the burger patties and cook until crispy, about 5 to 7 minutes. Add the cheese, cover and cook for 1 minute. Serve each patty on a whole wheat bun with arugula and Dijon mustard.