01 - Preheat oven to 350°F. Grease a 9x13 inch baking pan and line with parchment paper, allowing an overhang for easy removal.
02 - In a medium bowl, whisk together flour, baking powder, and salt until well combined.
03 - In a large bowl, beat softened butter and granulated sugar with an electric mixer until light and fluffy, approximately 3–4 minutes.
04 - Add eggs one at a time, beating thoroughly after each addition. Mix in vanilla extract and almond extract if using.
05 - Gradually incorporate dry ingredients into the wet mixture, mixing until just combined. Avoid overmixing to maintain tender texture.
06 - Press dough evenly into the prepared pan, smoothing the surface with a spatula. Bake for 18–20 minutes until edges are lightly golden and center is set. Cool completely in the pan.
07 - Beat butter until creamy. Blend in powdered sugar, vanilla, and 2 tablespoons milk. Adjust consistency with additional milk if needed. Divide and tint portions with pastel food coloring if desired.
08 - Spread frosting evenly over the cooled cookie base. Immediately sprinkle with festive Easter sprinkles before frosting sets.
09 - Lift the bars from the pan using the parchment paper overhang. Cut into 16 equal squares and serve or store in an airtight container.