01 -
Set the oven to 375°F and put liners into a 12-cup muffin tray.
02 -
Mix flour, sugar, and cinnamon in a small bowl. Drizzle in the butter and use a fork to toss it all together. Chill the mix to firm it up.
03 -
In a large bowl, stir sugar, flour, zest, salt, and baking powder till they’re combined.
04 -
Whisk the egg with melted butter and buttermilk in a new large bowl. If it looks a little separated, don’t stress—it’s normal.
05 -
Slowly pour the wet mixture into the dry and gently stir. Stop when it’s just barely incorporated—don’t smooth it out!
06 -
Carefully fold your blueberries into the batter, stopping before you overmix—they’ll stay whole this way.
07 -
Use about 3 tablespoons of batter per muffin liner. Don’t worry if they look full.
08 -
Sprinkle the chilled topping over the muffins, dividing it evenly across all.
09 -
Place the tray in your preheated oven and bake for 28–30 minutes. When the tops are golden and spring back, they’re ready.
10 -
These taste nice warm but give them at least 2 hours to cool if you can wait.