Preheat oven to 300 degrees. Generously grease a cupcake tin (or using one of those silicone baking cups will help tremendously here.) with butter or cooking spray.
In a bowl combine the flour, baking soda and salt. Set aside.
Cream the butter and sugars in a large bowl with a hand mixer. Add the eggs one at a time and the vanilla and combine. Add the flour mixture in batches until thoroughly mixed. Cut milky way bars into 12 even pieces.
Taking the dough in 3/4 to 1 inch balls and place in the bottom on the cupcake tins. Flatten them out. Add a piece of the milky way bar in the center. With another dough ball the same size place it over the candy bar and press to form.
Place into the oven for 35-40 minutes until the cookies are lightly golden brown on top and they look dry and not wet.
Let cool on a wire rack for at least 15 minutes. Take out of tin and enjoy!