Cream together butter and sugar. Mix together dry ingredients. Add condensed milk. Then add dry ingredients roll into small balls and bake on baking sheet for approximately 12 minutes. I bake on baking paper so that I can slide one sheet off and put next sheet in the oven immediately without having to wait for cookies to cool. Cookies must cool before being moved as they're very soft when the come out of oven and will break. Store in airtight cookie jar or container