Preheat & Prep – Preheat the oven to 325°F. Grease a 9×13-inch baking dish.
Mix Wet Ingredients – In a large bowl, beat the cream cheese until smooth. Add oil and sugar, mixing until well combined.
Incorporate Eggs & Vanilla – Beat in the eggs one at a time, ensuring each is fully incorporated before adding the next. Stir in the vanilla extract.
Combine Dry Ingredients – In a separate bowl, sift together the flour, baking powder, and salt. Gradually mix the dry ingredients into the wet mixture, stirring just until combined.
Add Buttermilk – Gently fold in the buttermilk until the batter is smooth.
Bake – Pour the batter into the prepared baking dish and bake for 35-40 minutes, or until a toothpick inserted into the center comes out clean. Allow the cake to cool completely.
Prepare Frosting – In a large bowl, beat the butter and cream cheese until smooth. Gradually add powdered sugar and salt, mixing until fully combined.
Frost & Chill – Spread frosting over the cooled cake. Refrigerate until ready to serve.
