The Best Fudgy Chocolate Texas Sheet Cake (No Cooling Required!)

If you need a quick, crowd-plepleasing chocolate cake that delivers maximum flavor with minimal effort, you’ve found it. This isn’t just cake; this is Chocolate Texas Sheet Cake—the moistest, fudgiest, and easiest chocolate cake you will ever make. The best part? You pour the warm frosting right over the warm cake! No waiting for it to cool, just pure chocolate indulgence ready to serve in less than an hour.

If you’re anything like me, having a delicious cake recipe ready to go makes any week a little sweeter! If you loved how easy and moist this Chocolate Texas Sheet Cake was, you’ll definitely want to check out some of my other tried-and-true favorites. Whether you’re craving the bright flavor of my Moist Tangy Lemon Cake, the unique spice of Sourdough Carrot Cake, or just another perfect chocolate chip cookie fix, you’ll find plenty of inspiration for your next baking adventure right here!

The Texas Sheet Cake Difference: Why It’s Better

Speed & Simplicity: This cake uses a simple, shallow sheet pan (13×9 inches), which ensures fast, even baking. You can mix the entire batter, bake the cake, and frost it in under an hour!

The Fudge Frosting Method: The signature move! The warm, buttery, fudge frosting is poured directly onto the hot cake. This allows the icing to slightly melt and seep into the top layer of the cake, creating an unbeatable moist, almost brownie-like top layer.

Moisture Secrets: We use a touch of sour cream (for tender richness) and a boiled butter-cocoa mixture (to bloom the cocoa powder), ensuring the cake stays deliciously moist for days.

Key Steps for Beginner Success

1. The Boiled Cocoa Batter – We don’t just add butter and cocoa—we bring them to a boil with water. This is a quick and effective way to “bloom” the cocoa powder, which intensifies the chocolate flavor significantly. This warm liquid also ensures the batter is perfectly smooth before baking.

Pro-Tip: Make sure to let the cocoa mixture cool just slightly before adding it to the rest of the wet ingredients so you don’t accidentally scramble the eggs.

2. Pan Prep is Essential – While the thinness of a Texas Sheet Cake ensures quick baking, it also makes it prone to sticking if you don’t prep the pan correctly. Generously buttering and flouring the pan creates a barrier for the sugar and cocoa, guaranteeing easy removal and clean slices.

Pan Size: Use a 13×9-inch pan for the classic thin sheet cake size. If you want a thicker slice, double the recipe and use a 9×13 pan, increasing the bake time by 5-10 minutes.

3. Don’t Overbake! – This cake is designed to be ultra-moist. Because it’s shallow, it bakes fast—about 25 minutes. Overbaking is the enemy of moisture! Check the cake early (around 20 minutes) and pull it immediately when the toothpick test shows only moist crumbs attached.

Troubleshooting & FAQs

Q: Why are sour cream and an extra yolk used in the batter?
A: The sour cream adds fat and acidity, which work together to create an incredibly tender, soft crumb while boosting the leavening action of the baking soda. The extra egg yolk adds even more richness and fat, guaranteeing that sought-after moist texture.

Q: What is the best way to store this cake?
A: Unlike many baked goods, this cake is best stored at room temperature. Simply cover the entire pan tightly with plastic wrap. Storing it in the fridge will cause the butter in the fudge icing to harden, making the cake dry and less tender.

Q: Can I use different cocoa powder?
A: Yes, you can use regular unsweetened cocoa powder or Dutch-process cocoa. Dutch-process will give you a darker, smoother chocolate flavor, but either works beautifully in this recipe.

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The Best Fudgy Chocolate Texas Sheet Cake (No Cooling Required!)

This Texas Sheet Cake is likely the most MOIST chocolate cake you will ever enjoy! It's perfectly chocolate, moist and delicious, and very easy to make!

4.80 from 5 votes

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Cuisine: American

Prep Time: 15 minutes minutes

Cook Time: 25 minutes minutes

Total Time: 40 minutes minutes

Servings: 15 servings

Calories: 336kcal

Author: Juliea Huffaker

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Ingredients

For the moist chocolate cake

• 1 Cup All purpose flour
• 1 cup sugar granulated white
• 1/2 tsp baking soda
• 1/4 Cup Sour Cream
• 1/4 tsp salt
• 1 large egg + 1 egg yolk
• 1/2 Cup water
• 1/2 Cup Butter melted
• 3 Tablespoons Milk
• 3 Tablespoons Cocoa Powder unsweetened

For the Fudgy Frosting

• 1/2 cup butter melted
• 2 tablespoons Milk
• 4 cups powdered sugar
• 5 tablespoons coco powder

Instructions

• Start by preheating your oven to 350 degrees.
• Next, butter a 7×11 or 13×9 rectangle cake pan.
• Then add 2 tablespoons of flour and dust the pan so that the entire surface is coated in butter and flour. Shake out excess flour. (Helps prevent sticking!)
• Next, get a medium size mixing bowl, and a hand mixer (or your mixer's bowl) and add the flour, sugar, soda, and salt. Stir to mix dry ingredients well.
• Add your egg, egg yolk and sour cream.
• Using an electric mixer, beat till fully moist and blended.
• In a small saucepan, melt a stick of butter over medium heat,
• Add the water and unsweetened cocoa powder.
• Whisk till smooth.
• Bring mixture to a BOIL, them remove from stove.
• Slowly add hot cocoa butter mixture to your batter and blend together till smooth.
• Using a rubber spatula, Scrape down sides of mixing bowl as needed, and mix till well blended.
• Pour into prepared cake pan, and spread evenly.
• Bake in preheated oven for about 25 minutes, or till a toothpick comes out clean. (DO NOT OVER BAKE!)
• While cake is baking, make frosting!
• In a small saucepan, melt butter.
• Add milk and cocoa.
• Using a wire whisk, blend till smooth.
• Add powdered sugar.
• Using a hand blender or whisk, blend till smooth!
• When cake is done, remove it from oven.
• Pour warm frosting over top of warm cake.
• Spread to cover cake evenly.
• Optional – Before serving, top with fresh sliced strawberries and shaved chocolate;)

Notes

The Boil! Melting the butter and bringing it to a boil with the cocoa is our little secret weapon. This step “blooms” the cocoa powder, which means it maximizes the chocolate flavor before it even hits the oven. Just let it cool for a minute or two before adding it to your batter.

The Golden Rule: DO NOT OVERBAKE! Because this cake is thin, it cooks fast. Start checking for doneness around the 20-minute mark. The center is done when a toothpick comes out with moist, fudgy crumbs attached—if it comes out totally clean, it’s already too dry.

Pan Size: This recipe is perfectly portioned for a standard 13×9 inch pan for that classic, shallow sheet cake thickness. If you want a thicker, taller slice for a special occasion, simply double the entire recipe and increase the baking time by about 5-10 minutes.

Serving Warm: The warm frosting poured over the warm cake is truly the best part—don’t wait for the cake to cool down! If you have leftovers, this cake is happy being stored right in the pan, covered tightly with plastic wrap, at room temperature for the best moisture and texture.

Make it Fancy: A handful of chopped pecans or walnuts stirred into the batter right before baking is a traditional (and delicious!) Texas sheet cake addition.

Nutrition

Serving: 1g | Calories: 336kcal | Carbohydrates: 54g | Protein: 2g | Fat: 14g | Saturated Fat: 9g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 0.5g | Cholesterol: 46mg | Sodium: 182mg | Potassium: 70mg | Fiber: 1g | Sugar: 45g | Vitamin A: 426IU | Vitamin C: 0.03mg | Calcium: 21mg | Iron: 1mg