The best way to get crispy potatoes is to roast them in a hot oven at a high temperature. A toasty 450 degrees Fahrenheit will ensure crispy skin and creamy inside.
Leftover roasted mini potatoes can be stored in an airtight container in the refrigerator for up to 4-5 days. Reheat in the microwave for a few minutes or on a skillet over medium-high heat.