First Step: Preheat your oven to 350°F (175°C) and line baking sheets with parchment paper. This prevents sticking and ensures even baking for oatmeal banana cookies. Gather all ingredients to streamline the process, especially if baking with kids or on a tight schedule.

Second Step: Mash 3 ripe bananas in a large bowl until smooth, about 1 1/2 cups. Their ripeness guarantees sweet, moist dough without extra sugar. Stir in 1/3 cup applesauce, 1/4 cup peanut butter, and 1 tsp vanilla extract until creamy. This base creates healthy banana cookies packed with flavor.

Third Step: Add 2 cups rolled oats to the wet mixture. Stir gently to combine into a sticky dough. For gluten-free easy banana cookies, use certified oats here. If making the chewier version, cream 1/2 cup softened butter with 3/4 cup brown sugar in a separate bowl until fluffy, about 2 minutes.

Fourth Step: Beat in 1 egg (or applesauce substitute) and 1 tsp vanilla. In another bowl, whisk 1 1/2 cups flour, 1 tsp baking soda, 1/2 tsp cinnamon, then incorporate with 1 cup oats. Fold into wet ingredients for soft banana cookies. Add 1/2 cup chocolate chips for indulgence.

Fifth Step: Scoop tablespoon-sized dough balls onto sheets, spacing 2 inches apart. Flatten slightly for even cooking. For no sugar banana oatmeal cookies, stick to the oat-banana base and bake 15-18 minutes until firm. The chewy version needs 10-12 minutes until edges brown.

Sixth Step: Cool on sheets for 5 minutes, then transfer to racks. They firm as they cool, staying moist for days. This yields 12 large or 24 smaller healthy banana oatmeal cookies. Adapt by adding raisins for busy professionals needing portable snacks.

Final Step: Serve warm or store for later. Pair with milk for students or top with nuts for seniors. These steps work for vegan swaps too, using flax egg. Total time: 25 minutes prep to enjoy chewy banana cookies.