preheat oven to 425F
stir together 1/3 cup softened butter + 1/2 cup maple syrup + 1 tsp vanilla
add in 1 cup apple sauce
whisk in 2 eggs
add in 2 1/4 cup all purpose flour + 2 tsp baking powder + 1 tsp cinnamon
fold in 1 cup blueberries
scoop evenly in a lined muffin pan
bake for 5 min, lower temp to 375F and bake for another 17-20 min or until golden and toothpick comes out clean