Peggy's Blueberry Muffins: Made with Sour Cream
I developed these muffins hoping for a moist muffin, and I was successful! I just love this version with the sour cream. This cinnamon sugar topping adds that extra punch.
I developed these muffins hoping for a moist muffin, and I was successful! I just love this version with the sour cream. This cinnamon sugar topping adds that extra punch.
- Carbohydrate 83.2331858337768 g
- Cholesterol 194.593333333333 mg
- Fat 11.76889 g
- Fiber 1.59967502707859 g
- Protein 10.8816666666685 g
- Saturated Fat 5.82325408333333 g
- Serving Size 1 1 Serving (178g)
- Sodium 167.007250145231 mg
- Sugar 81.6335108066982 g
- Trans Fat 1.31373575 g
- Calories 476 calories
Step-by-step
- Adjust oven rack to middle position and heat oven to 350 degrees. Spray standard muffin tin with nonstick vegetable cooking spray.
- Whisk flour, baking powder, and salt in medium bowl until combined. Whisk egg in second medium bowl until well-combined and light-colored, about 20 seconds. Add sugar and whisk vigorously until thick and homogenous, about 30 seconds; add melted butter in 2 or 3 additions, whisking to combine after each addition. Add sour cream in 2 additions, whisking just to combine.
- Add frozen berries to dry ingredients and gently toss just to combine. Add sour cream mixture and fold with rubber spatula until batter comes together and berries are evenly distributed, 25 to 30 seconds. (Small spots of flour may remain and batter will be thick. Do not overmix.)
- Use ice cream scoop or large spoon to drop batter into greased muffin tin. Bake until light golden brown and toothpick or skewer inserted into center of muffin comes out clean, 25 to 30 minutes, rotating pan from front to back halfway through baking time. Invert muffins onto wire rack, stand muffins upright, and cool 5 minutes. Serve as is or use one of the toppings below.
The Acid-Base Reaction
Bakers frequently ruin muffins by overworking the batter after adding the wet ingredients. When unbleached all-purpose flour meets liquid, gluten strands begin to form immediately. Keeping the mixing time to exactly 25 to 30 seconds prevents tough, rubbery crumb structures. The high concentration of lactic acid in sour cream reacts vigorously with the alkaline baking powder. This chemical interaction produces carbon dioxide bubbles that expand rapidly inside the oven at 350 degrees.
Why Frozen Berries Matter
Fresh berries bleed pigment and water too easily into dense doughs, resulting in grey streaks throughout the crumb. Coating frozen blueberries directly in the flour mixture before adding the dairy creates a protective barrier around each fruit piece. Tossing the fruit dry ensures the berries remain suspended evenly rather than sinking to the bottom of the tin. Wild blueberries function best here because their smaller size distributes flavor uniformly without weighing down the batter.
Texture and Post-Bake Evolution
Fat percentages in dairy significantly influence final moisture retention and crumb tenderness. Sour cream contains roughly twenty percent milk fat, coating the flour proteins to inhibit excessive gluten development. Storing baked goods in an airtight container at room temperature preserves this moisture for up to forty-eight hours. Reviving day-old muffins requires a brief three-minute refresh in a warm oven to restore crispness to the exterior.
