HEAT oven to 350ºF.

BEAT butter and sugar in large bowl with mixer until blended. Add eggs and sour cream; mix well. Add bananas and combined dry ingredients; mix just until moistened. Stir in nuts.

POUR into greased and floured 9x5-inch loaf pan.

BAKE 1 hour or until toothpick inserted in center comes out clean. Cool 5 min.; remove from pan to wire rack. Cool completely before slicing. Refrigerate leftovers.
Kraft Kitchens Tips
Add-Ins
Add one of the following to batter before pouring into prepared pan and baking as directed: 8 slices cooked and crumbled OSCAR MAYER Bacon, 1 cup KRAFT Caramel Bits or 1 cup toasted BAKER'S ANGEL FLAKE Coconut.
Special Extra
Mix 2 Tbsp. sugar and 1/4 tsp. ground cinnamon. Dust greased pan with half the sugar mixture. (No need to flour the greased pan.) Pour batter into pan, sprinkle with remaining sugar mixture and bake as directed.
Banana Muffins
Prepare batter as directed; spoon into 16 paper-lined muffin cups. Bake 22 to 24 min. or until toothpick inserted in centers comes out clean. Cool in pan 5 min. Remove to wire racks; cool.