Place rack in top third of oven, add sheet pan + preheat oven to 475°; peel (or don't peel!) potatoes, cut into ½-inch sticks, mix with 3 tbsp oil + salt/pep; add fries to hot pan + bake 15 min; flip fries over, reduce heat to 425° + bake 10-15 min more until golden

Meanwhile, heat 1 tbsp oil in a large skillet over high; cook burgers with salt/pep 3 min, flip + cook 2 min, then add 1 slice of cheese to each burger; cover pan + cook 1-2 more min until cooked through + cheese has melted

Heat a clean skillet over med-high; working in batches, heat 4 cauliflower sandwich rounds 30 sec per side or until warm; add burgers to rounds with fries on the side