Preheat oven to 350°F. Spray a muffin pan with non stick cooking spray or add cupcake liners.
In a bowl, combine all dry ingredients thoroughly: rolled oats, baking powder, cinnamon, nutmeg, and sea salt.
On a plate mash banana with a fork until very mushy.
Beat the 4 eggs in a bowl with a fork.
Add mashed banana, beaten eggs, milk, maple syrup, vanilla extract and nut butter to the oat mixture. Stir everything together and let sit 10 minutes to thicken.
Scoop 1/4 cup of batter into one muffin tin and pour the rest in another. Make a well in the center of batter, then add 1 tsp jelly to each.
Add muffin tin to oven and bake for 30-35 minutes or until edges are golden brown and inside is cooked. Let cool 10 minutes, then serve.
