The most perfect blueberry muffins! These are fluffy, soft muffins. They are studded with gorgeous blueberries throughout and topped with a buttery sugar streusel!
1 1/2cupsfresh blueberries*washed and almost completely dried
Instructions
For the streusel
In a small bowl, make the streusel. Combine flour, white sugar, and cold cut up butter. Using your hands, mix it together until combined into a crumbly, streusel mixture. Set aside while you make the muffin batter.
1 cup all-purpose flour, 1/3 cup white sugar, 7 tbsp butter
For the muffins
Preheat the oven to 425℉/218℃. Line your muffin tin with 12 liners and set aside. Melt the butter and prepare to measure the rest of your ingredients as it cools.
1/2 cup butter
In a large bowl, whisk melted and cooled butter, white sugar, egg, egg yolk, buttermilk, oil, and vanilla. Whisk until combined.
1/2 cup butter, 2 tbsp oil, 1 egg, 1 egg yolk, 1 cup buttermilk*, 1 tbsp vanilla, 1 cup white sugar
Add in flour, salt, cornstarch, baking soda, and baking powder. Using a spatula, gently fold until just combined. It's important not to over mix with muffins.
In the bowl with the blueberries, add 1-2 tsps of flour and gently toss around until evenly coated. The light coating of flour will absorb any extra liquid it may have before adding it into the mixing bowl.
1 1/2 cups fresh blueberries*
Add the blueberries and mix in a few times.
Evenly divide the batter between 12 muffin liners. You can bake them all in 1 tin, or 6 in 2 tins for a taller rise. Sprinkle streusel on top.
Bake the muffins at 425°F for 5 minutes, then turn down to 375°F and bake for an additional 12-15 minutes. The muffins are ready when a toothpick inserted comes out dry with no wet batter.
These muffins are best eaten fresh. They stay fresh covered at room temperature for a few days, or in the refrigerator in an airtight container for up to 1 week!
Notes
Buttermilk* - To create buttermilk, mix 1 cup of milk with 1 tbsp of lemon juice or vinegar. Allow it to sit on your counter for a minimum of 10 minutes. Make sure it is at room temperature when adding it into your bowl.
Blueberries* - Don't dry the blueberries completely after washing them, this will help the flour stick better to them.