Double Chocolate Cookies with Fleur de Sel Cupcakes and Frosting Nutella Macadamia Nut Cookies

Cream together butter and both sugars, then mix in the egg and vanilla until smooth and creamy. Sift together flour, baking soda and both salts and mix into the wet ingredients. Fold in the chopped chocolate until well combined and then chill until firm. Preheat then oven to 350 degrees with the rack positioned in the middle. Line two baking sheets with parchment paper. Roll the dough into 24 one inch round balls and place on the baking sheets, pressing down with your hand to flatten. Bake until lightly browned around the edges, about 12-15 minutes. Cool slightly before transferring to a wire rack to cool completely. Preheat oven to 350 degrees with the oven rack positioned in the center. Fill a 12 cup muffin tin with paper cupcake liners. Cream together the butter and sugar. Then, add the eggs, one at a time, then the milk and vanilla, whisking until smooth. Sift together the flour, baking powder and salt and mix into the wet ingredients. Divide the mixture evenly into the cupcake liners and bake until lightly browned, about 15-20 minutes. While the cupcakes are cooling, whip together the butter, creme fraiche and vanilla with enough icing sugar to make it taste sweetened. Adjust the consistency with the milk, if necessary. Spread on the cupcakes and sprinkle with crumbled granola. Preheat oven to 350 degrees with the rack positioned in the center. Cream together butter and both sugars until light and fluffy. Combine this with the Nutella and then add the eggs, one at a time, whipping until the mixture is smooth and satiny. Sift together the flour, cocoa powder, baking soda and salt and mix into the wet ingredients. Fold in the macadamia nuts with a spatula until well combined. Line two baking sheets with parchment paper. Place 9 heaping tablespoons per baking sheet, trying to distribute the nuts evenly. Bake until the cookies have spread out and just look slightly damp in the cracks, about 12-15 minutes. Room from the oven and cool slightly before transferring to wire racks to cool completely.