This is the dessert we had for Easter when we had everyone here for dinner, and I wanted something that was a little spring-ish, but not overly involved. I found the recipe here, and having it labeled "Big Batch" was enough to convince me. I think "big batch" anything almost automatically goes into the Mom Food lexicon. Added to that, I made the bar part early in the week and froze it until Easter morning, when I set it on the counter to thaw, then frosted it. Not having to cram something more complicated into the day was a bonus.
Lemon Sugar Cookie Bars
For the bars, combine the butter, softened cream cheese, and sugar. Cream together for 2 minutes. Add the egg and beat for an additional minute. Add the lemon zest and lemon juice. Mix to combine.
In a separate bowl mix together flour, baking soda, baking powder and salt. Mix well. The batter will be thick and sticky. Spray a large sheet pan (the one I used was 11"x17") with cooking spray and scoop the dough onto it. With floured hands, spread the batter evenly in the pan. (The original recipe says to spray a rubber spatula with cooking spray to spread it, but that didn't work well for me.)
Bake for 20 minutes, or until the center is cooked through. You don't want them to get too dark, or they will be dry, so watch them carefully. Remove from the oven and allow to cool completely.
To make the frosting combine butter, cream cheese, powdered sugar, vanilla, milk, yellow food coloring, salt, and lemon juice into your and mix until combined and smooth. Add more powdered sugar if it's too thin. Top the bars with the frosting and smooth it out. Add some sprinkles if you want.