Place whole potatoes (do not poke) into microwave-safe covered dish.
Microwave on HIGH for 3 to 4 minutes.
While potatoes are cooking, cut mini peppers into small ¼-inch slices.
Spray a nonstick pan with cooking spray and heat to medium.
Add peppers and sauté until they start to brown. Remove from pan and set aside.
Remove potatoes from microwave and using a layer of paper towels covering each potato, smash it on a cutting board until 1 ¾-inch thick. Helpful tip: Use the side of a coffee cup or flat cooking utensil to smash the potatoes.
Spray sauté pan with cooking spray, heat on high and add smashed potatoes. Cook for 1 to 2 minutes until potatoes start to brown.
On a plate, place potatoes and layer with sour cream or yogurt (optional), peppers and cilantro.
Dust with salt, chili powder and pepper to taste. Serve warm.