PREP: Preheat the oven to 350 degrees F. Generously grease and lightly flour a regular-sized muffin tin. (I don't recommend muffin liners; this batter sticks to the liners).
ZUCCHINI PREP: Grate zucchini on the small side of the grater. Use cheesecloth or a few paper towels to thoroughly dry the zucchini to keep it from being too wet/watery in muffins. Squeeze zucchini a few times and then lightly pack it into a 1 cup measuring cup.
BANANA: In a small bowl, mash the banana. The banana is very important for binding of the muffins -- the riper, the better. Once it has been well mashed, measure out 3 level tablespoons.
WETINGREDIENTS: In a bowl, stir together the Greek yogurt, vanilla extract, 1 large egg, coconut oil (measured when melted, but cooled to room temperature so it doesn't clump), honey, and mashed banana. Add in the brown sugar. Stir.
DRYINGREDIENTS: In a separate bowl, stir together the oat flour (measured AFTER blending; See Note 1), white or white whole wheat flour, baking soda, salt, and cinnamon.
ZUCCHINI: Add the dry to the wet and mix until just combined. Overmixing will result in dense muffins. Add in the grated zucchini and stir until just incorporated.
BAKE: Divide the mixture evenly into the prepared muffin pan, evenly filling 12 muffin cavities. Bake for 18-22 minutes or until a toothpick when inserted into the center comes out clean and the edges are lightly browned. Avoid overbaking, which dries out the muffins. Let cool for 5-10 minutes and then use a fork to gently coax the muffins onto a cooling rack.
STORAGE: Store in an airtight container in the fridge; let stand at room temperature for 30 minutes to 1 hour before eating. Best enjoyed within 2-3 days.
Video
Notes
Note 1: Here's how to make oat flour: Add old-fashioned oats to a food processor or small blender jar. Pulse the oats until they are ground into a powder-like consistency that resembles flour. Stir the oats around to be sure that all the oats have been finely ground and there aren’t any whole oats left. Measure the 1/2 cup AFTER blending.