Preheat oven to 350 degrees F.
Combine flour, brown sugar, pecans, and butter in bowl. Press dough into an ungreased 13 by 9 by 2-inch pan. Bake for 12 to 15 minutes or until lightly browned.
For filling, beat cream cheese and granulated sugar together in a bowl until smooth, using a handheld electric mixer; add eggs and extract; beat well. Pour over crust. Bake for 20 minutes. Cool completely. Cut into squares before serving. Decorate tops with berries and mint leaves.
Photograph by Miki Duisterhof