01 -
Set your oven to 375°F and line a muffin tray with those little liners.
02 -
Blend the sugar, flour, and cinnamon with a small whisk in a little bowl. Drizzle in melted butter and use a fork to make it crumb-like. Toss it into the fridge to chill.
03 -
In a big bowl, throw together flour, sugar, lemon zest, salt, and baking powder. Whisk it all up.
04 -
Grab another large bowl and beat together the melted butter, egg, and buttermilk. If it looks split up, don't worry; it's totally fine!
05 -
Slowly mix the wet stuff into the dry mix and stir gently just until everything combines. Careful not to stir too much—it’ll look thick and a little messy.
06 -
Fold in the blueberries lightly so the batter doesn't get all purple. Just a light mix will do.
07 -
Scoop 3 tablespoons worth of batter into each of the 12 muffin liners.
08 -
Sprinkle those chilled crumbs over the muffins by hand. Get them nice and covered.
09 -
Slide the muffin tray into the oven for about 28-30 minutes. They're ready when the tops turn golden and bounce back slightly when touched.
10 -
They're tasty warm, but if you wait about 2 hours, they get even better!