Step 1

Preheat the oven to 375ºF.

Step 2

In a large bowl, beat brown sugar, butter, and egg together.

Step 3

Add flour, cinnamon, salt, baking soda, and baking powder. Beat well until dough forms.Add diced rhubarb and mix again.

Step 4

Using a 1-inch cookie dough scoop, form balls of dough and place them on a greased cookie sheet.

Step 5

Bake cookies for 12-14 minutes or until baked through.

Step 6

Allow cooling on cookie sheet for 5 minutes.

Step 7

Then place on a rack until cool completely before frosting.

Step 8

Beat the cream cheese and the butter until combined and fluffy.

Step 9

Add the powdered sugar and vanilla and beat until smooth.

Step 10

Add milk as needed to get a spreadable consistency.