In a large mixing bowl, cream together the butter, sugars, egg, and vanilla until light and fluffy.
2 sticks salted butter, 1/2 Cup sugar, 2 Tbsp brown sugar, 2 egg yolks, 1 tsp vanilla
Next, mix the salt into the flour and mix in the flour mixture into the butter mixture until everything is incorporated.
2 Cups Flour, 1/2 tsp salt
Using a one Tbsp measuring spoon, measure out small balls of dough and gently press down to flatten. For thumb-print cookies (filled) take your thumb and gently press down in the center of each dough ball, creating a small indention for your filling. If icing or covering with chocolate, simply use a fork and press down gently to create a criss cross pattern.
Pop into the preheated oven and bake for 10-12 minutes. Or until the edges begin to turn golden brown.
Allow the cookies to cool for 5-10 minutes on a baking rack. Then fill with 1/2 tsp of caramel, strawberry jam. Or spread with chocolate. Enjoy!
1/4 Cup caramel dessert sauce, 1/4 Cup Strawberry Jam