INGREDIENTS
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1 stick butter, softened
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1/2 cup sugar
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2 eggs
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1 teaspoon vanilla extract
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1 cup all-purpose flour
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1 teaspoon baking powder
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1/2 teaspoon salt
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1/4 cup half-and-half
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Vegetable nonstick spray
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1/4 cup half-and-half
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1/2 cup chocolate chips
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Special equipment: four 8-ounce jam jars, cleaned and dried