→ Muffin Base
01 -
Butter, softened and unsalted
02 -
Neutral-flavored oil
03 -
All-purpose flour, extra for dusting blueberries
04 -
Fresh blueberries
05 -
Granulated sugar
06 -
Buttermilk, at room temperature
07 -
Egg, at room temperature
08 -
Kosher salt
09 -
Baking soda
10 -
Vanilla extract
11 -
Baking powder
→ Streusel Topping
12 -
Unsalted butter, melted
13 -
Kosher salt
14 -
Brown sugar, lightly packed
15 -
Vanilla extract
16 -
All-purpose flour
17 -
Rolled oats
→ Optional
18 -
Dust with powdered sugar