2 1/2cupsall-purpose flouror substitute cake flour for lighter crumb
2 1/2tspbaking powder
1/2tspsaltreduce slightly if using salted butter
3/4cupunsalted buttersoftened
1/2cupneutral oilcanola or vegetable oil
2cupssugar
4largeeggsroom temperature
1tbsppure vanilla extractor use vanilla bean paste for stronger flavor
1cupbuttermilkroom temperature (or milk + 1 tbsp lemon juice/vinegar)
Instructions
Grease two 9-inch round cake pans, line with parchment, and dust with flour.
In a medium bowl, whisk together flour, baking powder, and salt.
In a large bowl, beat butter, oil, and sugar until light and fluffy, about 3 minutes.
Add eggs one at a time, then stir in vanilla extract.
Add flour mixture in three parts, alternating with buttermilk, beginning and ending with flour. Mix gently.
Divide batter evenly into prepared pans. Bake at 350°F (175°C) for 28–32 minutes, until golden and a toothpick comes out clean.
Cool in pans for 10 minutes, then transfer to wire racks. Cool completely before frosting.
Notes
Variations: Add sprinkles for funfetti, swirl in chocolate for marble effect, or bake as cupcakes (18–20 min). For dairy-free, use almond milk + vinegar and plant-based butter. Always use room temp ingredients and avoid overmixing for best results.