Line 2 baking sheets with parchment paper. Combine cake mix, flour, butter, eggs, and vanilla in large bowl. Beat at low speed with electric mixer until blended well. Mix in cranberries, nuts and lemon rind. Divide dough in half.
Place logs on prepared baking sheets.
Bake each log 30-35 minutes or until pick inserted in center comes out clean. Remove from oven and cool on baking sheets 15 minutes. Using serrated knife, cut logs into -inch slices. Arrange slices on baking sheets. Bake slices 10 minutes longer at 350 degrees.