1Preheat oven to 375 degrees. In a medium bowl, cream together butter, oil, bananas and sugar. Add vanilla, salt and egg white; mix thoroughly to combine. In a small bowl, mix together flour and baking soda and stir into batter. Add chocolate chips to batter and stir evenly.
Drop 48 half-teaspoons of dough onto one or two large nonstick baking sheets, leaving a small amount of space between each cookie. Bake cookies until golden around edges, about 4 to 6 minutes- let cool. Grab some milk!