The retro Hi-Lo Diner in Minneapolis is known for its big breakfasts and main meal–worthy donuts. Known as Hi-Tops, these come topped with a mix of sweet and savory ingredients. The epic Gary Cooper is a house-made donut finished with buttermilk fried chicken, maple-bourbon syrup, country gravy, and green onion.  Another outrageously good option is the Notorious P.I.G.: a donut buried under pulled pork, black bean and corn salsa, sour cream, and a fried egg.