Flourless Blueberry Banana Blender Muffins

medium/large ripe banana, peeled

large egg

heaping 1/2 cup creamy, no-stir almond butter

to 4 tablespoons honey (agave or maple syrup may be substituted)

vanilla extract

baking soda

baking powder

salt, optional and to taste

blueberries (I used frozen; if using frozen add them to batter frozen and don’t thaw)