• Cut sweet potatoes into 1/2-inch wedges.
• Add sweet potatoes and 1 tbsp oil to a parchment-lined baking sheet. (NOTE: For 4 ppl, use 2 parchment-lined baking sheets, with 1 tbsp oil per sheet.)
• Season with salt and pepper, then toss to coat.
• Roast in the middle of the oven, flipping halfway through, until tender and golden-brown, 22-24 min. (NOTE: For 4 ppl, roast in the middle and top of the oven, rotating sheets halfway through.)

• Meanwhile, peel, then cut half the onion (whole onion for 4 ppl) into 1/4-inch slices.
• Heat a large non-stick pan over medium-high. When the pan is hot, add 1/2 tbsp (1 tbsp) oil, then onions.
• Cook, stirring occasionally, until softened, 4-6 min. Season with salt.
• Transfer onions to a small bowl and set aside.

• Meanwhile, add turkey, breadcrumbs, 1/4 tsp (1/2 tsp) salt and pepper to a medium bowl. Season with pepper, then combine.
• Form mixture into two 4-inch-wide patties (4 patties for 4 ppl).

• Heat the same pan (from step 2) over medium-high.
• When hot, add patties to the dry pan. (NOTE: Don't overcrowd the pan; cook patties in 2 batches if needed.)
• Pan-fry until golden-brown, 2-4 min per side.
• Transfer patties to one side of another parchment-lined baking sheet, then top with cheese.

• Meanwhile, halve buns.
• Arrange on the other side of the baking sheet with patties, cut-side up.
• Bake in the bottom of the oven until buns are golden-brown, cheese is melted and patties are cooked through, 4-6 min.** (TIP: Keep an eye on buns so they don't burn!)

• Meanwhile, stir together BBQ sauce and mayo in another small bowl. Season with salt and pepper.
• Spread half the BBQ sauce mixture over buns.
• Stack onions, patties and spring mix on bottom buns.
• Close with top buns.
• Divide cheeseburgers and sweet potato wedges between plates.
• Serve remaining BBQ sauce mixture on the side for dipping.

If you've opted to get ground turkey, cook it in the same way the recipe instructs you to cook the ground beef.**