Soft peanut butter cup cookies shaped into mini cups and filled with dulce de leche.
In a small bowl, sift together the flour, salt and baking soda. Set aside.
In the bowl of an electric mixer, combine butter and sugar, beat on medium-high speed until light and fluffy, 2-3 minutes.
Add eggs, one at a time, mixing well after each addition. Add vanilla extract. Scrape sides and bottom of the bowl.