These sour cream blueberry muffins are bursting with sweet and fresh blueberry flavor. They are soft and perfectly moist on the inside with perfectly golden-brown top. The texture of these muffins is just right! Don’t be surprised when they disappear in seconds!
In a large bowl, beat together 2 eggs, 1 cup granulated sugar and 1/2 teaspoon fine salt with an electric mixer on high speed for 4-5 minutes. Eggs should be light in color.
Add 1 cup sour cream, 1/2 cup vegetable oil and 1 tsp vanilla extract. Beat on low speed until just combined, about 30 seconds.
In a medium bowl, combine and whisk the dry ingredients: 2 cups all-purpose flour, 1 tsp baking powder and 1/4 tsp baking soda. Add the flour mixture to wet ingredients 1/3 at a time, beating on low speed with each addition just until combined. DO NOT OVERMIX or muffins will turn out dense. You can also use handheld whisk to mix in the flour.
In a small bowl, toss to coat 1 1/2 cups fresh blueberries with 1 tsp all-purpose flour. Add the blueberries to batter and use a spatula to gently fold in blueberries just until combined.
6. Spoon muffin batter equally into muffin pan filling muffin cups 3/4 to the top (or until all of the batter is used up). Bake at 375°F for 25-30 minutes, or until tops are golden and a toothpick inserted into the center, comes out clean. *If using frozen berries, increase baking time to 30-35 mins.
Let baked muffins cool in muffin pan for 5 minutes and then transfer onto a cooling rack until room temperature before enjoying.
For perfectly round muffins - fill muffin cups 3/4 to the top. If completely filled, muffins will rise and fall to sides at the end, making them look flat on top. If extra batter (sometimes it happens), use remaining batter to make mini blueberry muffins. You will likely have 10 of them, filled 3/4 to the top as well. Kids love mini muffins even more!
Measuring correctly in baking is everything! To measure flour, spoon into a measuring cup and scrape off the top with the back of a knife.
Baking with Frozen Blueberries: If fresh blueberries are not on hand, you can definitely use frozen blueberries for this recipe. Keep in mind, frozen blueberries will make the batter slightly blue-green colored once baked and cooled. Over-mixing muffin batter with frozen berries will cause your muffins to be extra greenish-blue. Toss frozen berries with a bit of flour before incorporating into the batter to prevent from sinking. Frozen berries cool the batter, therefore, increase baking time to 10-13 minutes longer.