1 ½tablespoonscornstarchused to thicken the fruit filling
1 ½tablespoonswarm waterhelps dissolve the starch smoothly
2cupsdiced strawberriesfresh and ripe for best flavor
6tablespoonsgranulated sugarsweetens the strawberry mixture
1teaspoonlemon zestadds brightness and balance
1 ⅔cupsall-purpose flourspooned and leveled for accuracy
1teaspoonbaking powderfor lift and light texture
¼teaspoonbaking sodahelps with browning and rise
½teaspoonsaltbalances the sweetness
1cupgranulated sugarsweetens the cupcake batter
½cupunsalted buttermelted (slightly cooled before mixing)
2large egg whitesfor a lighter crumb
¼cupsour creamadds moisture and tenderness
¾cupwhole milkkeeps the cupcakes soft
2teaspoonsvanilla bean pasteor vanilla extract for flavor
1 ½cupscold heavy creammust be well chilled to whip properly
3tablespoonsgranulated sugarlightly sweetens the whipped cream
1teaspoonvanilla bean pasteor vanilla extract for aroma
½cupreserved strawberry fillingto flavor the whipped cream
Strawberry slices optionalfor garnish and color
Fresh mint optionalfor a fresh finishing touch
Instructions
Stir the cornstarch and warm water together in a small bowl until smooth and thick.
Place the strawberries and sugar in a small saucepan and cook over medium heat, stirring and gently crushing some of the fruit as it warms.
Bring the mixture to a gentle simmer, then pour in the cornstarch mixture and keep stirring while it cooks for about five minutes until thickened.
Take the pan off the heat, mix in the lemon zest, and let the filling cool completely before using.
Set the oven to 350°F (177°C) and line a muffin pan with cupcake liners, preparing extra liners for a second batch if needed.
In a large bowl, whisk together the flour, baking powder, baking soda, and salt until evenly combined.
In another bowl, whisk the melted butter and sugar together, then blend in the egg whites, sour cream, milk, and vanilla until smooth.
Pour the wet mixture into the dry ingredients and whisk just until a creamy batter forms with only a few small lumps.
Spoon the batter into the liners, filling each about two-thirds full to leave room for rising.
Bake the cupcakes for 20 to 22 minutes, until a toothpick inserted in the center comes out clean.
Let the cupcakes rest in the pan for ten minutes, then move them to a rack to cool completely.
Set aside half a cup of the strawberry filling, then cut a small circle from the center of each cooled cupcake to create a pocket.
Spoon some of the strawberry filling into each opening, trim the cut-out cake piece, and place it back on top to seal. assemble
Whip the heavy cream, sugar, and vanilla on medium-high speed until medium peaks form, about three to four minutes.
Gently fold the reserved strawberry filling into the whipped cream until streaked and fluffy.
Spread or pipe the strawberry cream over the filled cupcakes, piling it high if you like.
Decorate with strawberry slices or mint if desired, then refrigerate until ready to serve.
Notes
These cupcakes taste like a picnic in dessert form—soft cake, jammy berries, and a fluffy crown of cream. They’re the kind of treat that disappears fast and gets everyone asking for the recipe.