Like biting into a cloud, these Angel Food Cupcakes are a crowd-pleasing dessert that is perfect for any occasion. They are soft, light, and super fluffy!
Preheat the oven to 325°F. Line 2 (12-cup) muffin tins with 16 cupcake liners.
In a food processor, add the sugar and process until very fine and almost powdery, about 1 minute. Remove and reserve ½ cup of the fine sugar.
In a sifter over a large bowl, combine the remaining fine sugar, cake flour, and salt. Sift together, then whisk until well combined.
In a large mixing bowl or the bowl of a stand mixer, beat the egg whites, warm water, and cream of tartar on medium-low speed until frothy, about 1 minute. Increase the speed to medium. Gradually add the reserved ½ cup of fine sugar, a tablespoon at a time, beating until stiff peaks form, about 4 minutes total. (You do not need to keep beating until they are glossy.)
Sift in a quarter of the flour mixture into the egg whites and gently fold until just combined. Repeat with the remaining flour, adding in three more batches. Divide the batter evenly among the cupcake liners, filling to the top of each liner (about ⅓ cup or 25g each). Use a spoon or spatula to gently even the tops of the batter.
Bake for 25 to 30 minutes or until the tops are golden brown and firm to the touch in the center. Let the cupcakes cool completely in the pan.
For the Topping:
In a large mixing bowl, beat the cream, sugar, and vanilla on medium-high speed until stiff peaks form, about 3 minutes. Pipe or dollop the whipped cream on top of the cooled cupcakes. Garnish with fresh berries, if desired.
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Notes
It feels counter-intuitive to fill cupcakes all of the way to the top of the liners, but these tend to shrink a little after baking, so you want a full cup to start with.
Whipped egg whites are delicate, and adding all of the dry ingredients at once will deflate the egg whites, so make sure to add them a bit at a time.
The batter is quite foamy, so you won’t be able to pour the batter into the cupcake liners. A spoon or spatula is ideal for filling the liners.
It is essential to have a clean and dry bowl for whipping the egg whites. The egg whites cannot contain any egg yolk as well. If the bowl is not completely clean or yolk-free, you will have difficulty whipping up the whites.
You do not need to grease the liners; the cupcakes need something to hold onto as they rise, so be sure to use paper liners.
Eggs are easier to separate when cold, but egg whites whip up easier when closer to room temperature. I recommend separating them in advance if you have the time.
Measure your flour correctly! Adding too much flour to the recipe is the most common mistake that will yield dry and dense cupcakes. The best and easiest way to measure flour is by using a scale. If you don’t have one, then fluff your flour with a spoon, sprinkle it into your measuring cup, and use a knife to level it off.
Running the sugar through a food processor helps prevent the sugar from cutting through the egg whites and deflating them.