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Ingredients
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- 3 cups all-purpose flour
- 2 teaspoons baking powder
- ½ teaspoon baking soda
- ½ cup (1 stick) salted butter, softened to room temperature
- ½ cup vegetable oil
- 1 ¾ cups granulated sugar
- 3 large eggs, room temperature
- 2 large egg yolks, room temperature
- 1 ½ teaspoons vanilla extract
- 1 ¼ cups buttermilk, room temperature
Instructions
- Preheat the oven to 350°F and spray a 9x13x3-inch baking dish.
- In a medium bowl, combine flour, baking powder, and baking soda. Set aside. Note: If using unsalted butter, add one teaspoon of salt.
- In a mixer, cream together softened butter, vegetable oil, and granulated sugar until fluffy, about 3 minutes.
- Add the eggs one at a time, mixing fully before adding the egg yolks and vanilla extract.
- Stir in half of the dry ingredients until combined, followed by half of the buttermilk. Repeat with the remaining ingredients, scraping down the sides as needed.
- Pour the batter into the prepared dish and smooth the top.
- Bake for 35-40 minutes until a toothpick comes out clean. If it browns too much, cover with foil lightly. Baking times may vary.
- Allow to cool completely.
Notes
Make sure all your dairy ingredients are at room temperature for best results.
You can use unsalted butter, but remember to add salt if you do.
When checking for doneness, rely on the toothpick test rather than just baking time.
- Prep Time: 30 minutes
- Cook Time: 70 minutes
- Category: Desserts
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice
- Calories: 350
- Sugar: 25g
- Sodium: 200mg
- Fat: 15g
- Saturated Fat: 8g
- Unsaturated Fat: 5g
- Trans Fat: 0g
- Carbohydrates: 50g
- Fiber: 1g
- Protein: 4g
- Cholesterol: 70mg