Preheat oven to 425 degrees. Prepare a baking sheet with foil and lightly coat with cooking spray. Place a colander in the sink. Thoroughly rinse produce and pat dry. Peel onion, then cut half into small dice and other half into thin strips. Stem, core and cut half of the red pepper into small dice and other half into thin strips. Stem cilantro. Cut sweet potatoes lengthwise into 1/2" thick fries. Zest, halve, and juice orange. Drain black beans (do not rinse).

Warm a medium non-stick pan over medium heat. Add 1 tsp. olive oil, diced onions, and diced red peppers and cook for 3 minutes, or until tender. Transfer diced onions and peppers to a bowl and wipe out pan. Add beans, oats, and spice blend to bowl with onions and peppers. Mash until ingredients come together and can be formed into a burger. Season with a pinch of salt and pepper.

Divide mixture and form two 1" thick burgers. If mixture is too dry, add water in 1 Tbsp. increments until it holds together. If mixture is too wet, keep mashing and let sit for 5 minutes to allow oats and beans to absorb excess moisture. Add 1 tsp. olive oil to pan over medium high heat. Add burgers and cook 2-3 minutes on each side. Transfer seared burgers to one half of the baking sheet and wipe pan clean.

On the other half of the baking sheet, toss sweet potatoes with 1 tsp. olive oil and season with a pinch of salt and pepper. Place in oven and bake for 12-15 minutes, or until sweet potatoes are tender and golden brown and burgers are warm throughout. After removing, place a slice of cheese on each burger.

While the burgers and sweet potatoes are baking, return pan to medium-high heat. Add 1 tsp. olive oil, julienned red bell peppers, julienned onion, and a pinch of salt and pepper. Cook for 4 minutes. Set aside 1 Tbsp. orange juice to make mayo and add remaining orange juice to pan. Increase heat to high and cook until juice is reduced to a syrup, 3-5 minutes. Remove from heat and allow to cool. Stir in cilantro leaves. In a small bowl, mix mayonnaise, orange zest, reserved orange juice, and a pinch of pepper.

Spread orange mayo on bottom bun and place burger on top. Spoon onion and pepper marmalade (to taste) over burger and add top bun. Arrange fries next to burger.