Brownie sandwich cookies with peanut butter frosting

Start by preheating your oven to 350F. In a microwave safe bowl add your olive oil and chocolate chips. Melt in 30 second increments until chocolate chips are melted. In a large bowl add your eggs, vanilla extract and sugar. Whisk until light in color then add your melted chocolate and olive oil mixture. Whisk until incorporated. Add your dry ingredients in and fold until combined. Set aside on the counter for 15 minutes to allow the flour to hydrate. Scoop your cookies onto a lined baking sheet. Place in the oven on 350F for 11 minutes. While your cookies are baking make your peanut butter frosting. For the peanut butter frosting: Add your butter and creamy peanut butter to a bowl. Mix on medium speed until smooth. Add your powdered sugar and milk and mix again. Place your frosting in a piping bag and ice your cooked and cooled cookies. Once your cookies are completely cooled ice with your peanut butter frosting and enjoy!