Cut potatoes into ¼" slices.
Place on prepared baking sheet and toss with 2 tsp. olive oil, ¼ tsp. salt, and a pinch of pepper.
Spread into a single layer and sprinkle with Parmesan.
Roast in hot oven until tender and cheese browns, 18-20 minutes.
Replace foil and reserve baking sheet.
White potatoes roast, par-bake flatbreads.
Par-Bake the Flatbreads
Place flatbreads directly on oven rack and bake until lightly browned, 8-10 minutes.
While flatbreads par-bake, prepare garlic.
Prepare the Garlic
Assemble and Bake Flatbreads
Carefully top flatbreads with potatoes, garlic, and cheese.
Place directly on oven rack with baking sheet on rack below to catch any drips. Bake until golden brown and warmed through, 5-7 minutes.
Finish the Dish
Plate dish as pictured on front of card, garnishing with sour cream, pesto, and arugula. Bon appétit!