Step 1

Place the oats, mushrooms, shallot, carrot and garlic cloves in a food processor and pulse until everything has been combined and the shallot is chopped. Add in the lentils, maple syrup, tomato paste, spicy brown mustard, some salt, marjoram, pepper, red pepper flakes and garlic powder. Keep pulsing until everything has been combined, but it is still crumbly like ground meat. The mixture should not be pasty. Shape the mixture into six 3 inch patties.

Step 2

Pour a little olive oil into a large nonstick skillet. Over medium heat, cook the patties for two to three minutes, turning only once. You want them to be golden brown on both sides.

Step 3

Mix the mayonnaise, ketchup and mustard in a small bowl. Spread the mixture on the buns before adding the toppings and patties.