1. Heat the oven to 400F. Spray muffin tin with non-stick cooking spray. In a large bowl, toss together the defrosted potatoes, oil, salt and pepper. Put about 1/3 of a cup of the potato mixture in each cup of a 12-cup muffin tin (about 1 heaping tbsp if using mini muffin tin). Press the mixture in the bottom and around the sides of each cup. Bake until crispy on edges and golden brown in bottom, about 40 to 45 minutes. Remove from oven and allow to cool a bit. Once cool run a knife around the outside of each nest to loosen it from the tin.