Ingredients
- 1 ⅓ cups all-purpose flour
- 1 ⅓ cups white whole-wheat flour
- 1 teaspoon baking powder
- ½ teaspoon salt
- ½ cup (1 stick) unsalted butter, softened
- 2 tablespoons safflower oil or canola oil
- 1 cup granulated sugar
- 1 large egg, at room temperature
- 2 ½ teaspoons vanilla extract
- 1-2 tablespoons water, as needed
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