Low-FODMAP Peanut Butter and Banana Baked Oatmeal Bars; Gluten-free, Vegan

Name: Low-FODMAP Peanut Butter and Banana Baked Oatmeal Bars; Gluten-free, Vegan
Prep time: 5 min
Cook time: 25 min
Total time: 30 min
Cuisine: American
Ingredients: 1 & ½ cups quick oats; 1 tsp baking powder; ½ tsp salt; 1 tsp cinnamon; 2 ripe bananas, mashed; 1/2 cup all-natural smooth peanut butter, divided into ¼ cup and ¼ cup; 1 tsp pure vanilla extract; 1/2 cup, plus 1 tbsp pure maple syrup, divided; 1 tbsp flax seed meal, mixed into 3 tbsp warm water; ¾ cup low-FODMAP milk; 1/3 cup chopped peanuts plus extra for sprinkling