Using a fork, combine all ingredients for the crumble in a small bowl and set aside.
2 tablespoons butter, 3 tablespoons sugar, 1/3 cup gluten free all purpose baking flour, 1 teaspoon lemon zest
Preheat the oven to 350 Fahrenheit.
Line a loaf pan with parchment paper and set aside.
In a mixing bowl, add the sugar and lemon zest. Use your fingers to combine the two for about 30 seconds, this will help release more lemon flavor.
1 cup white sugar, 3 tablespoons lemon zest
Add in the softened butter and beat with the sugar using an electric mixer.
1/2 cup unsalted butter
Add in the eggs, lemon juice, greek yogurt, vanilla and lemon extract.
3 eggs, 2 tablespoons lemon juice, 1/2 cup plain greek yogurt, 1 teaspoon vanilla extract, 1 teaspoon lemon extract
Beat in the flour (making sure to spoon and level to measure), baking powder and salt.
2 cups gluten free all purpose baking flour, 1 1/2 teaspoons baking powder, 1/4 teaspoon salt
Combine the blueberries with the 1/2 tablespoon of flour. Fold into the batter.
1 1/4 cups blueberries, 1/2 tablespoon gluten free all purpose baking flour
Transfer to the prepared loaf pan. Top with the crumble.
Bake for 60-75 minutes or until a toothpick comes out clean. All ovens are different, so keep an eye on it toward the end.
Let cool in the pan for about 20 minutes, then transfer to a wire rack to finish cooling.
Once cool, whisk together all ingredients for the glaze and drizzle on top. Slice and enjoy!
1/2 cup powdered sugar, 2 teaspoons lemon juice, 1 teaspoon milk