Veggie Burger with Havarti, Caramelized Onion, and Sliced Apple

Ingredients

• 2 cups sliced mushrooms
• 2 Stemilt Piñata apples, sliced
• 1 medium carrot, peeled and grated
• 1 - 15 oz can of black beans, rinsed and drained
• 1/2 cup raw unsalted cashews
• 1/2 cup Panko breadcrumbs
• 1 large egg
• 1/2 cup grated parmesan cheese
• 1 garlic clove, minced
• 3 tbsp barbecue sauce
• 1 tsp salt
• 3/4 cup of cooked short grain brown rice
• 3 tbsp vegetable oil
• 1 onion, sliced
• 1 tsp salted butter
• 4 burger buns, sliced and toasted
• 4 slices Havarti cheese
• 4 tbsp mayonnaise
• 4 butter lettuce leaves