Oatmeal Whoopie Pies with Brown Butter-Maple Frosting

Preheat oven to 350ºF. Line baking sheets with parchment paper and set aside.

In a medium bowl, combine flour, oats, salt, baking soda and cinnamon and set aside.

Using an electric mixer in a large bowl, cream sugar and butter. Combine eggs one at a time then add in maple syrup. Gradually add in flour mixture.

Using a tablespoon or cookie scoop, make rounded tablespoon size balls and set on cookie sheets, spacing about 1 1/2 inches apart. Bake in preheated oven for 8-10 minutes until sides just begin to brown. Cool completely on wire rack.

For the brown butter-maple frosting:
Add butter to a small saucepan and slowly melt on low heat until butter turns an amber-brown color. Set aside to cool.

Using an electric mixer, add cooled melted butter to medium bowl with maple syrup and confectioners sugar. Mix on medium-low speed until combined. Add in 1-2 tablespoons milk until creamy.

To assemble:
Add a dollop of frosting to the bottom of one cookie. Place another cookie bottom on top of frosting and press down until a cookie sandwich is formed. Repeat set with remaining cookies.