First preheat your oven to 350 and line a square 8×8 baking pan with parchment and lightly butter.

In the bowl of a stand mixer fitted with the paddle attachment or in a large bowl with an electric mixer, cream together butter and sugar until light and fluffy.

Add in the egg and vanilla extract, continue mixing until well incorporated.

In a separate bowl combine flour, baking powder and salt, whisk to combine well.

Gradually add the dry ingredients into the wet ingredients mixing between each addition until all the flour mixture is well incorporated.

Next divide the dough in half and place on a clean work surface or piece of parchment paper.

Add yellow food coloring to one half of the dough and knead until the color is even throughout.

Repeat with the other half of the dough and orange food coloring. I used about 1/4 tsp of gel food coloring for each color.

Press the yellow dough into the bottom of your prepared pan.

Place the orange dough on a piece of parchment or wax paper and roll or press it out into an 8×8 square. Carefully place it on top of the yellow dough in the pan and gently press it into place getting it as close to the edges as possible.

Bake for 18-22 minutes or until just set. Don’t overbake or the cookies will be dry.

Place on a cooling rack to cool completely before frosting.

To make the frosting-

Place softened butter in a large mixing bowl and cream with an electric mixer.

Add in vanilla and continue beating until well incorporated.

Add in cream and half of the powdered sugar and mix until smooth. Add remaining powdered sugar and salt. Mix until all ingredients are well incorporated and frosting is smooth.

Spread frosting evenly across cooled cookie bars.

Decorate with candy corn and orange and yellow sprinkles.

Cut into 9 squares and serve!