Combine dry ingredients: In a large bowl, whisk together flour, sugar, lemon zest, baking powder, and salt.
Step 1
Incorporate butter: Grate the frozen butter and blend into the flour mixture until it resembles pea-sized crumbs.
Step 2
Incorporate butter: Grate the frozen butter and blend into the flour mixture until it resembles pea-sized crumbs.
STEP 3
Combine mixtures: Drizzle the wet ingredients over the dry, add blueberries, and stir until just moistened.
STEP 4