Ingredients
Scale
1 cup oil
2 cups sugar
4 eggs
1 teaspoon vanilla extract
3 cups all-purpose flour
1 tablespoon baking power
1 teaspoon salt
11/4 cup milk
Instructions
1. Arrange a rack in the middle of the oven and heat to 350°F. Coat a 13×18-inch rimmed baking sheet with cooking spray; set aside.
2. Whisk together the oil, sugar, eggs, and vanilla in a large mixing bowl until smooth. Add the flour, baking powder, and salt and whisk until mostly incorporated, though some lumps will remain. Gently whisk in the milk until smooth.
3. Pour the batter into the prepped baking pan and bake until the cake is lightly browned and springs back when lightly pressed, 20 to 25 minutes. Cool the cake on a wire rack while preparing the frosting.