Preheat the oven to 350 degrees Fahrenheit and lightly grease a 9X13 baking pan.

In a large bowl, cream together the butter and sugar until well combined and light and fluffy.  Then add in the eggs and the vanilla extract.  Mix for 1-2 minutes until they are incorporated.

Then hand stir in the flour, baking powder and salt.  Stir until just combined, being careful not to over mix.

Add the sprinkles and gently stir them into the cookie dough.

Press the dough into the 9X13 pan and press the dough down slightly.  Bake for 25-28 minutes until a toothpick inserted into the center comes out clean.

Move the pan to a wire rack to allow the bars to cool completely.

Cream together the butter and powdered sugar until combined and smooth.

Then add in the milk and vanilla extract and mix for 1-2 minutes until the frosting is light and fluffy.

Place approximately 1/2 cup of the frosting in a separate bowl.

Dye the large bowl of frosting a vibrant green color and dry the smaller bowl a vibrant red color.

Spread the green frosting on top of the cooled cookie bars.

Cut the bars into 15 even pieces and then pipe a small heart onto the center of each of the cookie bars with a round decorating tip.

Then the bars are ready to serve and enjoy!