Fluffy and moist bakery-style lemon muffins with a wonderful streusel crumb topping, baked golden brown and glazed with a sweet-tart lemon glaze. You will want to make these muffins again and again!
Preheat the oven to 425 degrees F. Line 12 muffin tins with cupcake liners, or spray with non-stick cooking spray.
To prepare the muffin batter: In a large mixing bowl, with a mixer, beat butter until fluffy. Add in sugar and combine thoroughly. Add in eggs, vanilla, sour cream, lemon zest & juice, and mix until incorporated. Sift the flour and baking soda into the wet ingredients, and stir until combined.
To prepare the streusel topping: Combine the streusel ingredients together with a with a fork, until mixed and crumble-like.
Evenly distribute the batter into 12 muffin cups. Top with the crumble topping.
Place the muffins in the preheated oven. Reduce oven temperature to 350. Bake for approximately 22 minutes, or until a toothpick inserted in the center comes out clean.
Cool muffins in the pan for about 10 minutes before glazing.
To prepare the glaze: whisk together the glaze ingredients until smooth. Drizzle over the tops of the warm muffins.
Notes
These muffins have a subtle lemon flavor. If you want more of a lemony taste, add more zest to the muffin batter.