Heat oven to 375°F. Grease or line a muffin tin with paper baking cups. Set aside.
In a small bowl, using a pastry blender or two forks, blend flour, brown sugar, oats and butter until crumbs form. Set aside.
In a large bowl, stir together flour, sugar, baking powder, lemon zest and salt. Add zucchini and blueberries, stir until zucchini and blueberries are coated.
In a small bowl, using an electric mixer, beat milk, butter, egg and lemon juice until blended.
Gradually add milk mixture to flour mixture. Stir until just blended.
Spoon into prepared muffin tin, filling about 3/4 full. Top each muffin with a rounded tablespoon of crumb topping.
Bake 20 to 23 minutes or until a toothpick is inserted in center comes out clean.
Heat oven to 375°F. Grease or line a muffin tin with paper baking cups. Set aside.
In a small bowl, using a pastry blender or two forks, blend flour, brown sugar, oats and butter until crumbs form. Set aside.
In a large bowl, stir together flour, sugar, baking powder, lemon zest and salt. Add zucchini and blueberries, stir until zucchini and blueberries are coated.
In a small bowl, using an electric mixer, beat milk, butter, egg and lemon juice until blended.
Gradually add milk mixture to flour mixture. Stir until just blended.
Spoon into prepared muffin tin, filling about 3/4 full. Top each muffin with a rounded tablespoon of crumb topping.
Bake 20 to 23 minutes or until a toothpick is inserted in center comes out clean.