These crispy one-bowl blueberry zucchini muffins feature a perfect cinnamon sugar crunch on top, combining moist zucchini and juicy blueberries for a delicious breakfast or snack treat.
Squeeze out zucchini moisture thoroughly to avoid soggy muffins. Toss frozen blueberries in flour before folding to prevent sinking and color bleeding. Avoid overmixing batter to keep muffins tender. If muffins brown too quickly, tent with foil during last 5 minutes of baking. Store in airtight container with paper towel to maintain crunch. Muffins can be frozen for up to 2 months.
Keywords: blueberry muffins, zucchini muffins, one-bowl recipe, cinnamon sugar topping, quick muffins, healthy muffins, breakfast muffins, snack muffins