"It's a classic for a reason...."
INGREDIENTS
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1 c. (2 sticks) unsalted butter, room temperature, plus more for pans
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3 c. (360 g.) all-purpose flour, plus more for pans
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1 tbsp. baking powder
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1 tsp. kosher salt
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1/2 tsp. baking soda
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2 c. (400 g.) granulated sugar
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1/4 c. vegetable oil
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6 large egg whites, room temperature
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2 tsp. clear vanilla extract
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1 tsp. almond extract
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2/3 c. full-fat sour cream, room temperature
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1 c. whole milk, room temperature
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1 1/2 c. (3 sticks) unsalted butter, room temperature
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5 c. (600 g.) powdered sugar
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1/4 c. (or more) heavy cream, room temperature
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2 tsp. clear vanilla extract
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1/8 tsp. kosher salt
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White sprinkles, for decorating (optional)