Step 1

Cream butter in small bowl with an electric mixer.

Step 2

Add brown sugar, cinnamon, salt, flour, and vanilla.

Step 3

Beat until well combined and creamy. Set aside.

Step 4

In a medium bowl, beat butter and sugar with an electric mixer until smooth and creamy, about 1-2 minutes.

Step 5

Add egg and vanilla.

Step 6

Beat until well incorporated.

Step 7

Add flour, salt, and baking powder.

Step 8

Mix only to blend.

Step 9

Turn dough out onto a lightly floured piece of parchment.

Step 10

Roll into a 9"x11" rectangle.

Step 11

Spread filling over entire surface of dough.

Step 12

Starting with the long side, roll up jellyroll-style.

Step 13

Wrap up in parchment, tucking ends under.

Step 14

Refrigerate at least 2 hours.

Step 15

When ready to bake, heat oven to 375 °F.

Step 16

Line 2 sheet pans with parchment paper. Set aside.

Step 17

Slice dough roll into ½ inch slices.

Step 18

Place on prepared sheet pans.

Step 19

Bake for 12 minutes, or until just starting to color around the edges.

Step 20

Combine all ingredients in a small bowl.

Step 21

Beat until smooth.

Step 22

Drizzle over cooled cookies.