Combine the best peanut butter cookies with a thick and creamy peanut butter filling and you have these Peanut Butter Sandwich Cookies. These cookies are soft and full of peanut butter flavor. The peanut butter filling just takes them over the top!
In large bowl, mix together butter and brown sugar until creamy. Add in eggs and vanilla and mix well.
Mix in baking powder, baking soda, and salt. Slowly add flour and mix well. Add peanut butter and mix until completely combined.
Shape dough into 1 1/2 inch balls then roll in granulated sugar. Place on cookie sheet. Use a fork to flatten dough.
Bake at 350 degrees for 10-12 minutes until light brown.
For the Filling
In a small mixing bowl, beat together softened butter and peanut butter until creamy. Add powdered sugar and mix well. Add 2-3 Tbsp milk until the filling is the desired consistency.
Pipe or spread filling between two cookies.
Notes
For best results, do not use a natural type peanut butter. I prefer Jif creamy peanut butter.
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