Preheat oven to 350°F (177°C). Line an 8 inch by 8 inch baking pan with parchment paper.
Add applesauce and peanut butter to a large mixing bowl. Stir until the ingredients are fully mixed and the mixture is uniform in color. Add in oats and stir until they are evenly mixed in. If adding any mix-ins, add them in now.
Pour batter into prepared baking pan. Use a spatula to evenly spread it across the pan and smooth the surface.
Bake for about 13-15 minutes or until the bars look set and cooked. Let bars cool fully before removing them from the pan and cutting and serving. Store uneaten bars in an airtight container in the fridge or freezer.
Notes
These oatmeal bars have a very low amount of sweetness. If you prefer sweeter, you can add 1-2 tbsp of honey to the batter (add it at the same time you add in the oats). You can taste the batter and adjust the sweetness as needed. You can also add mix-ins like chocolate chips, dried fruit or chopped nuts.
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.