Makes 24 smallish cookies

1/4 cup butter or shortening
1/4 cup + 2 tbsp peanut butter
3 tbsp brown sugar
2 tbsp + 1 tsp white sugar
1/2 large egg (keep the other half for the brownie filling)
2 tbsp milk
1/2 tsp vanilla extract
3/4 cup flour
1/2 tsp baking soda
1/4 tsp salt

about 1/2 cup of crushed pretzels
a pinch of fleur de sel
white sugar

Brownie Filling
1 oz bittersweet baking chocolate
2 tbsp butter
1/4 cup white sugar
1/2 egg
1/4 tsp vanilla extract
2 tbsp flour