Apple Pie Thumbprint Cookies

0 Preheat oven to 350° and line 2 baking sheets with parchment paper.
Make the Filling:
3 In a shallow stove top skillet, mix apples, cinnamon, sugar, water and salt over low-med heat. Simmer until apples are softened about 10 minutes. 
4 Stir in flour and mix well until sauce is thickened. Remove from heat and set aside.
Make the Dough:
7  In a large mixing bowl, beat the butter and sugar until light and fluffy. Add egg, vanilla and salt.
8 Gradually add flour and baking powder and beat on low until combined and dough forms.
9 Scoop the dough into 1 inch balls and place 2 inches apart on baking sheet. Press thumbprint into each of the balls.
10 Fill each indentation with about a teaspoon of apple filling.
11 Bake cookies for 12-15 minutes until golden.
12 Cool completely about 30 minutes.
Make the Icing:
15  In small bowl, stir drizzle ingredients until smooth, if necessary, adding 1/2 teaspoon milk at a time until thin enough to drizzle. 
16 Drizzle over cookies. Let stand about 15 minutes until set.