A red velvet sheet cake gives you the classic cocoa-forward, buttermilk-tangy crumb and deep red crumb without the fuss of layering round cakes. Baking it in a half-sheet pan means even slices, fast cooling, and a flat surface that’s easy to frost. This version uses a moderate amount of cocoa and a measured dose of gel color so the flavor stays balanced rather than dye-heavy.
The cream cheese frosting is whipped to a spreadable, stable consistency that holds its shape at room temperature for a couple of hours. You’ll get a dessert that serves a crowd from one pan and travels well to potlucks. If you like sponge cake, the crumb here will feel familiar but richer. Making this red velvet sheet cake at home is surprisingly straightforward once you know the key steps.
Why You’ll Love These Red Velvet Sheet Cake
- One pan bakes the whole dessert, so there’s no leveling or stacking.
- The buttermilk and cocoa combo creates a tender, slightly dense crumb.
- Cream cheese frosting adds tang that cuts the sweetness.
- Gel food color gives a true red without thinning the batter.
- Easy to portion into 24 squares for parties or bake sales.
Ingredients You’ll Need
- 2 1/2 cups all-purpose flour (300g) — provides the cake structure.
- 1 1/2 cups granulated sugar (300g) — sweetens and tenderizes.
- 1/4 cup natural unsweetened cocoa powder (22g) — gives the mild chocolate note.
- 1 teaspoon baking soda — the lift agent activated by buttermilk and vinegar.
- 1/2 teaspoon fine salt — balances sweetness.
- 1 cup neutral oil (240ml) — keeps the crumb moist longer than butter.
- 1 cup buttermilk (240ml), room temperature — adds tang and tenderness.
- 2 large eggs, room temperature — bind and add richness.
- 1 tablespoon white vinegar — boosts the red color and activates soda.
- 2 teaspoons vanilla extract — rounds the flavor.
- 1 tablespoon red gel food color — use gel, not liquid, to avoid watery batter.
- 8 oz cream cheese (226g), softened — base of the frosting.
- 1/2 cup unsalted butter (113g), softened — adds body to frosting.
- 3 cups powdered sugar (360g) — sweetens and stabilizes frosting.
- 1 teaspoon vanilla extract (for frosting) — flavor.
Ingredient Substitutions
Buttermilk: Replace with 1 cup whole milk plus 1 tablespoon lemon juice, rested 5 minutes. The acidity still activates the baking soda, though the crumb will be slightly less tender and a touch heavier. Expect a milder tang and a small increase in bake time of about 2 minutes. The red velvet sheet cake works well for weeknight cooking when time is limited.
Neutral oil: Use an equal weight of melted unsalted butter for a more buttery flavor. Butter solidifies when cold, so the cake firms up more in the fridge and the crumb is a bit less moist after a day. You may need to cream it with sugar rather than whisking straight in. Storing leftover red velvet sheet cake correctly keeps it tasting good for days.
Red gel food color: Swap for 2 tablespoons beet powder plus 2 tablespoons water if you want a natural tint. The color will be muted brown-red rather than vivid, and the flavor gets an earthy note. The crumb stays the same if you keep the added water minimal. For the best results with this red velvet sheet cake, read through all the steps before starting.
Cream cheese: Use mascarpone in equal weight for a sweeter, less tangy frosting. Mascarpone is softer, so add 1/4 cup more powdered sugar to keep it spreadable. It won’t hold up as long at warm room temperature. If you enjoyed this, our roasted broccolini sausage is worth trying next.
Step-by-Step Instructions
- Heat the oven to 180°C / 350°F and grease a 12×17 inch half-sheet pan. Line the bottom with parchment for clean release.
- Whisk flour, sugar, cocoa, baking soda, and salt in a large bowl until no streaks remain. This distributes the leavener evenly.
- In a second bowl, whisk oil, buttermilk, eggs, vinegar, vanilla, and gel color until the batter looks uniform and red. Avoid overmixing at this stage.
- Pour wet into dry and stir with a spatula do not overmix, stopping when a few small lumps remain. Spread into the pan edge to edge.
- Bake 25–30 minutes until the top springs back and a toothpick exits with moist crumbs. Cool in the pan on a rack.
- Beat cream cheese and butter on medium speed 2 minutes until smooth. Add powdered sugar and vanilla, beat 3 minutes until fluffy and stiff.
- Frost the cooled cake in a thin even layer. Chill 20 minutes so the frosting sets before slicing into 24 squares.
Pro Tips
Room-temperature eggs and buttermilk blend without curdling, giving a smoother batter and even crumb. Pull them out 30 minutes before mixing.
Measure flour by weight or spoon-and-level; a heavy hand packs the cup and yields a tight crumb. The cake should feel light when you lift the pan corner.
Apply frosting only after the cake reaches room temperature, or it melts and slides. A cold cake also cracks the surface under pressure.
For stable frosting on a warm day, read technique guidance from cream cheese frosting tests that show butter ratio matters. Use the full 1/2 cup called here.
Common Mistakes to Avoid
Using liquid red color instead of gel waters the batter and pales the crumb. Gel keeps the texture tight and the hue deep.
Opening the oven before 20 minutes drops the temperature and can sink the center. Wait until the edges look set before checking.
Overbeating after combining develops gluten, making the cake chewy instead of tender. Stop mixing as soon as streaks disappear.
Frosting a warm cake ruins the layer; the fat melts and soaks in. Always cool fully, about 45 minutes in the pan. For another easy option, check out our chicken quesadillas.
Serving Suggestions
Cut into 24 bars and plate on a white tray with a dusting of cocoa for contrast. The red crumb reads best against neutral dishes.
Pair with black coffee or a spritz to balance the sweet frosting. A small scoop of vanilla ice cream melts nicely on a warm square.
For a party board, surround with pasta salad cups for a savory counterpoint. Keep the cake shaded if outdoors.
Storage and Reheating
Store covered in the fridge up to 4 days in an airtight container; the frosting needs cold to stay firm. Let slices sit 15 minutes before serving for better texture.
You can freeze the unfrosted cake wrapped tight freeze for up to 2 months. Thaw overnight in the fridge, then frost fresh.
Do not leave the frosted pan out more than 2 hours total. Reheat individual squares 10 seconds in the microwave only if you want a soft, warm bite. You might also like our chicken quesadillas.
Recipe Variations
Chocolate Boost
Increase cocoa to 1/2 cup and reduce flour by 2 tablespoons for a deeper chocolate note. The crumb darkens and the red looks more burgundy. Bake 2 minutes longer to set the extra dry ingredients.
Citrus Tang
Add 1 tablespoon orange zest to the batter and swap vanilla in frosting for orange extract. The bright oils lift the cocoa and give a dessert-table twist. Use the same oven time but check the center at 28 minutes.
Nut Crunch
Press 3/4 cup toasted pecans into the frosting before chilling for texture. The nuts add a buttery snap against the smooth layer. Keep the cake refrigerated so the oils stay fresh.
Mini Version
Bake the batter in a 9×13 pan for 35–40 minutes and frost as one slab. Portions are thicker and serve 16. Watch the toothpick cue since the center lags the edges.
Red Velvet Sheet Cake
Description
A red velvet sheet cake delivers the classic cocoa-forward, buttermilk-tangy crumb and deep red color without the fuss of layering round cakes. Baked in a half-sheet pan and topped with stable cream cheese frosting, it serves a crowd and travels well to potlucks.
Ingredients
Instructions
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Heat and prepare pan
Heat the oven to 180°C / 350°F and grease a 12x17 inch half-sheet pan. Line the bottom with parchment for clean release so the cake lifts out without tearing.
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Whisk dry ingredients
Whisk flour, sugar, cocoa, baking soda, and salt in a large bowl until no streaks remain. This distributes the leavener evenly so the crumb rises without dense spots.
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Whisk wet ingredients
In a second bowl, whisk oil, buttermilk, eggs, vinegar, vanilla, and gel color until the batter looks uniform and red. Avoid overmixing at this stage to keep the crumb tender.
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Combine batter
Pour wet into dry and stir with a spatula, do not overmix, stopping when a few small lumps remain. Spread into the pan edge to edge for an even bake.
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Bake the cake
Bake at 180°C / 350°F for 25–30 minutes until the top springs back and a toothpick exits with moist crumbs. Do not open the oven before 20 minutes or the center may sink.
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Cool the cake
Cool in the pan on a rack for about 45 minutes until it reaches room temperature. Frosting a warm cake will melt the fat and make it slide, so full cooling is essential.
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Make frosting
Beat cream cheese and butter on medium speed for 2 minutes until smooth. Add powdered sugar and vanilla, beat 3 minutes until fluffy and stiff so it holds shape at room temperature.
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Frost and slice
Frost the cooled cake in a thin even layer, then chill 20 minutes so the frosting sets before slicing into 24 squares. Use a sharp knife wiped clean between cuts for neat bars.
Nutrition Facts
Servings 24
- Amount Per Serving
- Calories 320kcal
- % Daily Value *
- Total Fat 18g28%
- Saturated Fat 7g35%
- Cholesterol 45mg15%
- Sodium 220mg10%
- Total Carbohydrate 38g13%
- Dietary Fiber 1g4%
- Sugars 28g
- Protein 4g8%
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.
Note
- Storage: Store covered in the fridge up to 4 days in an airtight container; the frosting needs cold to stay firm and do not leave the frosted pan out more than 2 hours total.
- Make it ahead: Freeze the unfrosted cake up to 2 months, thaw overnight in fridge, then frost fresh for best texture.
- Pro tip: Use room-temperature eggs and buttermilk so the batter blends without curdling, and for another easy sheet-pan idea see our broccolini sausage dinner.
- Serving: Cut into 24 bars and plate on a white tray with a dusting of cocoa for contrast against the red crumb.
