Festive St. Patrick's Day Cookie Cake that's soft, chewy & studded with chocolate chips & green M&M's! A thick buttercream frosting rings the edges and is topped with sprinkles. It is delicious and perfect for all your little leprechauns!
Prep: Start by getting the oven preheating to 350°F. Then, spray an 8-inch springform pan with nonstick spray and set aside.
Batter: Next, in a large mixing bowl, beat the butter, brown sugar, and sugar until light and creamy. I find this easiest to do with an electric mixer or Kitchen Aid mixer. After that, add in the egg, egg yolk, and vanilla extract; continue to mix for 1 minute.
Proceed to stir in the flour, cornstarch, and baking soda and mix again until combined. Then stir in the chocolate chips and M&M candies until just combined, be careful not to overmix.
Bake: Continue to spread the cookie dough into the prepared springform cake pan and place in the preheated oven to bake for 20-25 minutes, until golden brown. Let the cookie cool for about 20 minutes, then run a knife around the edge and release the springform pan.
Frosting: Prepare the icing by combining the butter, vanilla extract, and powdered sugar, mixing until the mixture is light and fluffy. Again, using an electric mixer helps greatly with this step. Next, add in 2-4 drops green food coloring and stir well until no white streaks are seen.
Then pipe the frosting around the edges of the cake and top with sprinkles. Slice into wedges, serve and enjoy!
Notes
Festive St. Patrick's Day Cookie Cake is a wonderfully soft, chewy and delicious treat that is fun to share with family and friends. With a sweet, thick buttercream frosting, topped with sprinkles, it's perfect for the little leprechauns in your life!