2 cups (250g) all-purpose flour
1 cup (200g) granulated sugar
1/2 cup (41g) unsweetened natural cocoa powder
1 teaspoon baking soda
1/2 teaspoon salt
1 and 3/4 cups (315g) semi-sweet chocolate chips
2 large eggs, at room temperature
3/4 cup (185g) full fat sour cream or plain yogurt, at room temperature
1/2 cup (120ml) vegetable oil*
1/2 cup (120ml) whole milk, at room temperature
1 and 1/2 teaspoons pure vanilla extract
Preheat oven to 425°F (218°C). Spray a 12-count muffin pan with nonstick spray or use cupcake liners. This recipe yields about 14 muffins, so prepare a second muffin pan in the same manner or bake in batches and reserve leftover batter at room temperature for when the first batch is done.
Whisk the flour, sugar, cocoa powder, baking soda, salt, and chocolate chips together in a large bowl. Set aside.
Whisk the eggs, sour cream, oil, milk, and vanilla extract together until combined. Pour wet ingredients into dry ingredients and fold together with a rubber spatula or wooden spoon until completely combined. (Batter is quite thick, so I recommend a spatula or spoon over a whisk.) Avoid overmixing. The batter will be thick and sticky.
Spoon the batter into liners, filling them all the way to the top. Bake for 5 minutes at 425°F then, keeping the muffins in the oven, reduce the oven temperature to 350°F (177°C). Bake for an additional 15-16 minutes or until a toothpick inserted in the center comes out clean. The total time these muffins take in the oven is about 20-21 minutes, give or take. (For mini muffins, bake 13-14 total minutes at 350°F (177°C) the whole time.)
Cool muffins for 10 minutes in the pan, then transfer to a wire rack until ready to eat.
Cover leftover muffins and store at room temperature for 5 days or in the refrigerator for 1 week.
Freezing Instructions: For longer storage, freeze the muffins for up to 3 months. Thaw overnight in the refrigerator, then heat up in the microwave if desired.
Jumbo Muffins: If you’d like to make about 6 jumbo muffins instead of standard size, follow the recipe through step 3 using a greased jumbo 6-count muffin pan. Spoon batter into the liners, filling all the way to the top. Bake for 5 minutes at 425°F then, keeping the muffins in the oven, reduce the oven temperature to 350°F (177°C). Bake for an additional 25-28 minutes or until a toothpick inserted in the center comes out clean.
Sour Cream: Use full fat sour cream. In a pinch, you can replace it with plain yogurt. (Full fat Greek style or regular yogurt would be best.)
Oil: For best taste and texture, use vegetable oil. In a pinch, you can replace with canola oil or olive oil. The muffins can taste greasy with melted coconut oil, but if you try it, it’s imperative the other ingredients are room temperature so the coconut oil doesn’t solidify as you mix the batter together.
Milk: Whole milk is best. 2%, 1%, or nondairy milk work in a pinch. Do not use nonfat milk. Don’t use buttermilk. (You could use buttermilk if replacing both the sour cream AND milk, but the muffins taste a little spongy that way. Best to use sour cream and whole milk.)
Double Chocolate Muffins Details
Flavor: Chocolate. Seriously, that’s all you really need to know! This chocolate muffin recipe comes together with cocoa powder and chocolate chips. In recent years, I began adding vanilla extract to the batter for a touch of extra flavor. You can certainly leave it out if you’d like (and as mentioned above, the cookbook recipe doesn’t include it).
Texture: Unlike chocolate cupcakes and chocolate cake, these muffins don’t really have a sponge-like texture. And that’s mostly because we aren’t adding hot water to the batter. They’re more like a bakery-style muffin with a tighter crumb and satisfying bite.
Ease: Besides the deep chocolate flavor, what you’ll love most about this double chocolate chip muffin recipe is its ease. The recipe uses common baking ingredients, doesn’t require a mixer, and is super straightforward.
Key Ingredients in Double Chocolate Muffins
The full written recipe is below, but let’s walk through some key ingredients so you understand their importance. This is always helpful when looking for substitution options.
Cocoa Powder: Use unsweetened natural cocoa powder. You could get away use dutch process cocoa powder, but the muffins may not rise as much. For best taste and texture, stick with natural. Most of the flavor comes from the cocoa powder, so choose a good one! I’ve baked with many over the years and I always go back to Hershey’s.
Sour Cream: If you were to skip the sour cream and replace it with milk, the chocolate muffins would be thin, flat, and wet. Sour cream lifts the crumb and keeps the muffins moist. You can replace it with plain yogurt and I often do—in fact, that’s how the recipe is written in the book!
Oil: We usually use creamed butter and sugar in muffin recipes. However, cocoa powder is a very drying ingredient so it’s best paired with oil to keep the muffins moist. If you replace it with melted butter, the muffins will dry out. You won’t miss the flavor of butter because chocolate overpowers it.
Avoid Overmixing & Use Room Temperature Ingredients
Really all you’re doing here is whisking the dry ingredients together in one bowl and the wet ingredients together in another bowl. The dry ingredients include sugar and chocolate chips. This way you’re only mixing the ingredients together once—dry + wet instead of dry + wet + mixing in the chocolate chips. Make sense?
The reason why you’ll mix the chocolate chips into the dry ingredients is to avoid over-mixing the final batter. Over-mixing muffin batter can lead to a tough, dense baked good. While these chocolate muffins are certainly denser than our soft and spongy chocolate cupcakes, they aren’t heavy as bricks.
What will also help you avoid overmixing is using room temperature ingredients. Bring the eggs, milk, and sour cream to room temperature before starting. As a shortcut, place the eggs in a glass of warm water for 10 minutes and—honestly this is what I do—microwave the sour cream and milk for 10-15 seconds to take the chill off.
Tip: You won’t regret eating one warm out of the oven. Those melty chips!