01 - Preheat oven to 350°F. Grease and line a 9x13 inch baking pan with parchment paper, leaving an overhang for easy removal.
02 - In a medium bowl, whisk together flour, baking powder, and salt until well blended.
03 - In a large bowl, beat softened butter and granulated sugar with an electric mixer until light and fluffy, about 3 minutes. Add eggs one at a time, beating thoroughly after each addition. Mix in vanilla extract and almond extract.
04 - Gradually add dry ingredients to the wet mixture, mixing on low speed until just combined. Be careful not to overmix.
05 - Press dough evenly into the prepared pan, using a spatula to create a smooth surface. Bake for 18-20 minutes until edges are barely golden and center is set. Cool completely in the pan.
06 - Beat softened butter until creamy. Add powdered sugar, vanilla, and 2 tablespoons milk, beating until smooth and fluffy. Add additional milk as needed for spreadable consistency. For colorful frosting, divide and tint each portion with pastel food coloring.
07 - Spread frosting evenly over the cooled cookie base. Decorate immediately with Easter sprinkles while frosting is still soft.
08 - Lift the bars from the pan using the parchment overhang. Cut into squares and serve, or store in an airtight container.