Ingredients
Method
- Preheat oven to 425°F. Line a 12-cup muffin tin. Beat butter and sugar until pale and fluffy, about 3 minutes.
- Mix in eggs, vanilla, sour cream, milk, and oil on low until smooth.
- Add dry ingredients and mix on low just until combined. Toss frozen blueberries with 1 tbsp flour, then fold into batter gently.
- Divide batter among muffin cups, filling to the top. Sprinkle with coarse sugar.
- Place in oven, immediately reduce heat to 375°F, and bake 18-20 minutes until golden and a toothpick comes out with moist crumbs.
- Cool in pan 5 minutes, then remove and serve warm.
Notes
Let the butter soften on the counter for about 30 minutes before creaming. A good poke test: your finger should leave an indent without sinking all the way through. If you use fresh blueberries, they'll release more juice, so bake promptly and avoid over-folding.
