INGREDIENTS
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Nonstick baking spray, for the parchment
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1 1/2 cups all-purpose flour
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3 tablespoons cornstarch
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1 teaspoon baking soda
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1/2 teaspoon kosher salt
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1 1/2 cups granulated sugar
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9 tablespoons (1 stick plus 1 tablespoon) unsalted butter, at room temperature
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3 large eggs, at room temperature
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1/2 cup sour cream, at room temperature
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1 teaspoon vanilla extract
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6 strawberries, halved
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Fresh mint leaves, for serving
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1 1/2 cups granulated sugar
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3 tablespoons cornstarch
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One 3.5-ounce package strawberry-flavored gelatin
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2 1/2 pounds fresh strawberries, hulled and halved
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1 1/2 cups plain Greek yogurt
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1 1/2 cups cold heavy cream
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3/4 cup granulated sugar
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3 tablespoons brown sugar