25gcoarse sugar or raw cane sugar crystalsoptional
Procédé
Dry Ingredients
Sift the flour, baking powder and baking soda into a large bowl.
284 g all-purpose flour, 2 teaspoons baking powder, 0.5 teaspoon baking soda
Add the sugar and salt.
200 g granulated sugar, 0.5 teaspoon salt
Whisk to distribute them evenly.
Wet Ingredients
In a medium bowl, combine the eggs, sour cream, vanilla, oil, melted butter and milk.
2 large eggs,, 120 ml sour cream, 2 teaspoons vanilla extract, 60 ml sunflower oil, 56 g butter, 180 ml whole milk,
Whisk until the mixture is completely smooth.
Batter
Pour the wet ingredients into the bowl of dry ingredients.
Gently whisk, just until no streaks of dry flour remain.
Stop as soon as the batter is combined, without overmixing: a few small lumps may remain; they disappear as you fill the liners.
Gently fold in the mini chocolate chips.
230 g mini dark chocolate chips
Resting
Cover the bowl.
Let the batter rest for 30 minutes while the oven preheats.
Oven and Pan
Preheat the oven to 220°C.
Line the 12 cups of a standard muffin pan with paper liners.
Filling
Divide the batter among the liners using an ice cream scoop of about 60 ml or a large spoon, filling them all the way to the top.
Do not stir or press down the batter once it is in the liners.
Sprinkle a few mini chocolate chips over the top of each muffin, and be generous: they spread apart as the muffins rise.
Mini dark chocolate chips,
Sprinkle generously with coarse sugar, if desired.
25 g coarse sugar or raw cane sugar crystals
Baking
Bake for 5 minutes at 220°C.
Without opening the oven door, lower the temperature to 180°C.
Continue baking for 8 to 15 minutes, starting to check at 8 minutes.
Check for doneness: a toothpick inserted in the center should come out clean, apart from any traces of melted chocolate, and the tops should spring back when pressed.
Let the muffins cool in the pan for 5 minutes.
Turn them out onto a wire rack.
Ideally, serve warm.
Notes
The secret to the dome: fill the liners all the way to the top, let the batter rest, then start baking in a very hot oven. Resting gives the flour time to hydrate: the batter gains the strength to rise high and trap the gases from the leavening. The initial heat gives the leavening a boost and sets the edges, which forces the batter to rise upward instead of spreading out.A wide dome rather than a peaked one: for broader tops with nicely golden edges, preheat to 200°C, bake for 5 minutes, then lower to 190°C without opening the door and continue baking for 13 to 15 minutes.Baking time: depending on your oven, baking after the temperature drop can take anywhere from 8 to 15 minutes. Start checking with a toothpick at 8 minutes: overbaked muffins dry out.Chocolate: mini chips distribute more evenly through the batter. If you use regular-size chips, which tend to sink to the bottom, take 1 tablespoon of the flour mixture and toss the chips in it before folding them into the batter. Any chocolate works: dark, semisweet or milk. If you can't find mini chips, coarsely chop a bar of dark chocolate, or regular chips, into small pieces.Sour cream: this means American sour cream, a thick, tangy, full-fat cream. In Germany, Schmand or saure Sahne is a close match. Greek yogurt also works as a substitute.Flour: American all-purpose flour corresponds to T55 in France and Type 550 in Germany. Weighing it is the most accurate method: too much flour is the number one cause of dry muffins.Don't reduce the sugar: it holds in moisture and keeps the muffins soft. Don't overmix the batter either, or the gluten will make the crumb tough.Add-ins: you can add up to about 120 ml of chopped walnuts or pecans, or dried fruit.Storage: they're best warm, and they stay soft the next day. They freeze very well for up to 3 months in a tightly sealed freezer bag.