01 -
In a medium mixing bowl, combine sugars, cinnamon, and salt. Add melted butter and mix until smooth and thick. Add flour and combine using a fork until coarse crumbs form. Cover with plastic wrap and set aside.
02 -
Preheat the oven to 350°F (175°C). Line a 10-inch loaf pan with parchment paper, using two pieces for easy removal. Set aside.
03 -
In a small bowl, whisk together the flour, baking powder, baking soda, and salt to create a fine mixture for better texture.
04 -
In a large mixing bowl, cream together the butter and sugar using a mixer until well combined (1-2 minutes).
05 -
Add eggs one at a time, mixing after each addition. Mix in vanilla extract.
06 -
Alternately add the dry ingredients and Greek yogurt to the wet mixture, starting with half the flour mix, then half the yogurt, and repeating. Mix until the batter is thick and smooth.
07 -
Toss blueberries with 1 tablespoon of gluten-free flour to prevent sinking. Gently fold them into the batter using a spatula.
08 -
Spoon the batter evenly into the prepared pan. Sprinkle the crumble topping over the batter as desired.
09 -
Bake uncovered for 40 minutes. Cover loosely with foil and continue baking for an additional 20 minutes. A toothpick inserted into the center should come out clean.
10 -
Let the loaf cool in the pan for 30 minutes. Transfer to a wire rack to cool completely. Slice and serve.