Preheat oven to 350°F (175°C) and line a baking sheet with parchment.

Stir mashed bananas, nut butter, honey, and vanilla until smooth.

Fold in oats, cinnamon, salt, and chocolate chips or raisins.

Drop heaping tablespoons onto the sheet and flatten slightly with a fork.

Bake 10–12 minutes until set; cool on a rack.