Quick and easy one-bowl blueberry muffins with fresh lemon zest and a crunchy sugar topping, perfect for busy mornings or last-minute bake sales.
Do not overmix the batter to avoid tough muffins. Gently fold in blueberries to prevent crushing. Use frozen blueberries without thawing to prevent sinking. Sprinkle sugar on top for a crunchy crust. Tent muffins with foil if browning too fast.
Keywords: blueberry muffins, lemon zest, one-bowl recipe, easy muffins, quick baking, crunchy topping, breakfast muffins, bake sale recipe