1/3 c. vegetable oil
1 1/2 c. mashed ripe bananas, 3 lg.
1/2 tsp. vanilla
3 eggs
2 1/3 c. Bisquick
1/2 c. chopped walnuts, opt.

Mix ingredients thoroughly with a fork until moist. Grease loaf pans. Bake 350 degrees for 55 to 65 minutes. Less for small pans.