Combine the flour, sugars, and cinnamon in a small bowl.
Cut in the cold butter until crumbly.
Place in the refrigerator while preparing the batter.
Step 2: Mix the Dry Ingredients
Preheat your oven to 375°F.
In a large bowl, whisk together the flour, baking powder, baking soda, and salt.
Step 3: Mix the Wet Ingredients
In another bowl, whisk together the eggs, sugar, butter, sour cream, and vanilla.
Step 4: Combine
Pour the wet ingredients into the dry ingredients.
Stir gently until just combined.
The batter will be thick.
Step 5: Rest the Batter
Allow the batter to rest for 10 minutes.
This helps the freshly milled flour absorb moisture and creates a softer muffin.
Step 6: Add the Blueberries
Toss the frozen blueberries with 1 tablespoon flour.
Fold them gently into the batter.
Step 7: Fill and Top
Divide the batter among muffin cups or mini loaf cavities.
Fill each about ¾ full.
Press a few extra blueberries on top.
Sprinkle generously with streusel.
Step 8: Bake
Bake at 375°F.
Standard muffins: 18–22 minutes
Mini loaves: 22–25 minutes
Bake until lightly golden and a toothpick comes out with a few moist crumbs.
Step 9: Cool
Allow the muffins to cool in the pan for 10 minutes before moving them to a cooling rack.
Notes
Tips for Baking Fresh Milled Muffins
Use Frozen Blueberries
Frozen blueberries work beautifully in this recipe.There's no need to thaw them first.Simply toss them with a little flour and fold them into the batter.
Don't Overmix
Overmixing can create tough muffins.Mix only until the ingredients come together.
Use Freshly Milled Flour
For the best flavor and texture, mill your flour immediately before baking.
Frequently Asked Questions
Can I use fresh blueberries instead of frozen?
Yes.Fresh blueberries work just as well in this recipe.
Can I substitute Greek yogurt for sour cream?
Absolutely.Use plain full-fat Greek yogurt in a one-to-one substitution.
Can I freeze these muffins?
Yes.Allow them to cool completely before freezing.Store in an airtight container for up to three months.
Can I make this whole grain muffin recipe without streusel?
You can.The muffins are delicious on their own, but the streusel adds extra sweetness and texture that really makes them special.