Set a rack in the middle of the oven and preheat to 375 degrees F.
Put flour, sugar, yellow and blue cornmeal, baking powder, salt and pecans in
the bowl of an electric mixer and stir together with a fork. With the mixer at its
lowest speed, beat in the butter bit by bit until blended. Add eggs and liqueur;
beat until the dough is thoroughly blended and masses together.
Transfer dough to
a floured work surface. Shape it into a log 3 inches wide, 12 inches long, and 1
inch high. Place it on a parchment paper-lined or nonstick baking sheet pan.
for 30 minutes, or until lightly browned.
Let cool on the baking sheet for at least
2 hours or overnight.
Heat oven to 350 degrees F.
Transfer the dough log to a cutting board. With a serrated knife, slice the log
into 1/2-inch slices, and lay them on the baking sheet.
Bake for 10 to 12 minutes,
until lightly browned around the edges. After 6 minutes, turn the pan from front
to back if they are not browning evenly.