Ingredients
Equipment
Method
Make the cake
- Heat the oven to 350°F.
- Coat a 9x13-inch baking pan with nonstick cooking spray.
- Whisk the flour, granulated sugar, cocoa powder, baking soda, and salt in a large bowl.
- In a separate bowl, whisk the buttermilk, oil, eggs, vinegar, red food coloring, and 1 teaspoon of the vanilla extract.
- Pour the wet ingredients into the dry ingredients and whisk just until the batter is smooth.
- Pour the batter into the prepared pan.
- Bake for 30 to 35 minutes, until the center springs back lightly and a toothpick inserted in the center comes out with a few moist crumbs.
- Cool completely in the pan, about 1 hour.
Make the frosting
- Beat the cream cheese and butter in a large bowl with an electric mixer until smooth.
- Gradually beat in the powdered sugar and the remaining 1 teaspoon vanilla extract until fluffy.
Decorate the cake
- Set aside 3/4 cup frosting.
- Spread the remaining frosting evenly over the cooled cake.
- Tint the reserved frosting green, adding the gel coloring a little at a time.
- Spoon the green frosting into a zip-top bag and snip off a small corner.
- Pipe a zigzag Christmas tree on top of the cake, widening each row toward the bottom and adding a short trunk.
- Decorate with the holiday sprinkles.
- Refrigerate for at least 30 minutes before slicing.
Notes
For clean tree piping, snip just a small corner from the zip-top bag. Store covered in the refrigerator for up to 4 days; the cake can be frozen. For a gluten-free option, use a 1:1 gluten-free baking flour blend.
