Key Lime Whoopie Pies

If you are craving key lime pie, but want a treat you can eat on the go, then I would recommend these key lime pie whoopie pies.
Ingredients:
Cookies-
2 cups all purpose flour
1/2 cup graham cracker crumbs
1 1/2 teaspoons baking soda
1/2 teaspoon baking powder
1/2 teaspoon salt
1 teaspoon key lime juice
1 teaspoon vanilla extract
1 cup granulated sugar
1 stick unsalted butter at room temperature
1 large egg at room temperature
1 cup milk
Filling-
2 blocks reduced fat cream cheese at room temperature
1 stick butter at room temperature
zest of 1 large lime or 2-3 key limes
1-2 tablespoons key lime juice
2-4 cups powdered sugar
Directions:
- Pre-heat oven to 350 degrees and line two large baking sheets with parchment paper.
- Mix dry ingredients in a bowl- flour, graham cracker crumbs, baking soda, baking powder, salt
- Add wet ingredients to a stand mixer and cream together- butter, key lime juice, eggs, sugar, milk, and, vanilla extract.
- Gradually add dry ingredients mixing on low. Scrape the edges of the bowl as needed.
- Use a medium cookie scooper to form balls. Space out balls of dough 2 inches apart on lined baking sheets.
- Bake 9-11 minutes until slightly golden and firm, but springy to the touch.
- Let cookies cool on baking sheet for 5 minutes then transfer to a wire rack to allow them to cool completely.
- Meanwhile add cream cheese, butter, key lime juice, and lime zest to stand mixer. Mix with the whisk. Add the powdered sugar 1 cup at a time. Continue to add sugar until the filing reaches the desired consistency.
- Flip half of the cookies upside down.
- Use a piping tool or a spoon to spread the filling on half of the cookies.
- Gently place another cookie on top to form the whoopie pies.
- Enjoy!
- Store in an air-tight container.