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 butter and sugar with a mixer until light and fluffy. Add eggs one at a time, beating well after each addition. Mix in vanilla extract and almond extract if using.
04 - Gradually add dry ingredients to the wet mixture, mixing until just combined. Avoid overmixing to prevent tough bars.
05 - Press dough evenly into the prepared pan using a spatula to create a smooth surface. Bake 18–20 minutes until edges are barely golden and center is set. Cool completely in the pan.
06 - Beat butter until creamy. Add powdered sugar, vanilla, and 2 tablespoons milk. Beat until smooth and fluffy; add remaining milk if needed for spreadable consistency. Divide and tint portions with pastel food coloring if desired.
07 - Spread frosting evenly over cooled cookie base. Immediately top with Easter sprinkles before frosting sets.
08 - Lift bars from pan using parchment overhang. Cut into 16 squares and serve or store in an airtight container.