This Oreo Tres Leches Sheet Cake takes classic tres leches and gives it a cookies-and-cream twist. You get a soft vanilla-and-Oreo sponge that’s poked all over and soaked with a sweet three-milk mixture, then topped with fluffy whipped cream and plenty of crushed cookies.
Every bite is tender, milky, and full of Oreo crunch. It’s baked in a sheet pan, easy to slice, and perfect for parties, potlucks, birthdays, or any time you want a make-ahead crowd-pleasing dessert.
Why You’ll Love This Oreo Tres Leches Sheet Cake
- Incredibly moist – The sponge soaks up a rich blend of three milks for a soft, velvety crumb.
- Cookies & cream twist – Crushed Oreos in the cake and on top for flavor and texture.
- Party-friendly sheet cake – Bakes in one pan and slices cleanly into neat squares.
- Make-ahead dessert – Actually tastes better after chilling.
- Easy but impressive – Simple ingredients, bakery-style result.
Ingredients
For the Oreo Sheet Cake
- 2 cups (260 g) all-purpose flour
- 2 tsp baking powder
- 1/2 tsp baking soda
- 1/2 tsp fine salt
- 1 1/4 cups (250 g) granulated sugar
- 1/2 cup (115 g) unsalted butter, softened
- 1/4 cup (60 ml) neutral oil (vegetable or canola)
- 4 large eggs, room temperature
- 2 tsp vanilla extract
- 1 cup (240 ml) whole milk, room temperature
- 12 Oreo cookies, finely chopped or crushed (not too powdery)
For the Tres Leches Soak
- 1 can (14 oz / 397 g) sweetened condensed milk
- 1 can (12 oz / 354 ml) evaporated milk
- 1 cup (240 ml) heavy cream or half-and-half
- 1 tsp vanilla extract
- Pinch of salt
For the Topping & Garnish
- 2 cups (480 ml) heavy whipping cream, cold
- 1/3–1/2 cup (40–60 g) powdered sugar, to taste
- 1 tsp vanilla extract
- 10–12 Oreo cookies, roughly crushed (for topping)
- Optional: extra mini Oreos or Oreo halves for decorating each slice
How to Make Oreo Tres Leches Sheet Cake
1) Prep the pan & oven
Preheat the oven to 350°F (175°C).
Grease a 9×13-inch (23×33 cm) baking pan and line the bottom with parchment paper for easy removal, if desired. Lightly grease the parchment as well.
Tip: A metal pan works best for even baking and helps the cake soak evenly.
2) Make the Oreo cake batter
In a medium bowl, whisk together flour, baking powder, baking soda, and salt. Set aside.
In a large mixing bowl, beat the softened butter and sugar together until light and creamy, about 2–3 minutes. Add the oil and mix to combine.
Beat in the eggs one at a time, scraping down the sides as needed. Stir in vanilla.
Add the dry ingredients in two additions, alternating with the milk, beginning and ending with dry ingredients. Mix just until combined—don’t overmix.
Fold in the chopped/crushed Oreos gently so they are evenly dispersed throughout the batter.
3) Bake the cake
Pour the batter into the prepared pan and spread it into an even layer.
Bake for 25–30 minutes, or until the top is lightly golden and a toothpick inserted in the center comes out clean or with a few moist crumbs.
Place the pan on a wire rack and let the cake cool for 15–20 minutes. The cake should still be warm (not hot) when you add the milk mixture.
4) Mix the tres leches soak
In a large measuring jug or bowl, whisk together the sweetened condensed milk, evaporated milk, heavy cream (or half-and-half), vanilla, and a pinch of salt until fully combined.
Tip: Pouring from a jug makes it easier to evenly distribute the mixture over the cake.
5) Poke & soak the cake
Using the handle of a wooden spoon, a skewer, or a large fork, poke holes all over the warm cake, going almost to the bottom. Aim for evenly spaced holes so the milk mixture can seep in everywhere.
Slowly pour the tres leches mixture over the entire surface of the cake, allowing it to sink in as you go. It will look like a lot—but the cake will drink it up.
Cover the pan and refrigerate for at least 4 hours, preferably overnight, so the cake fully absorbs the milks and becomes ultra moist.
6) Make the whipped topping & decorate
Once the cake is thoroughly chilled and set, make the topping:
Add cold heavy cream to a chilled mixing bowl. Beat on medium-high speed until it starts to thicken. Add powdered sugar and vanilla, then continue beating until medium-stiff peaks form (creamy and spreadable, not grainy or overwhipped).
Spread the whipped cream evenly over the chilled cake.
Sprinkle generously with crushed Oreos and, if you like, decorate with mini Oreos or Oreo halves on top.
Chill another 30 minutes before slicing to let the topping set slightly.
Serving Suggestions
- Cut into neat squares and top each piece with an extra Oreo half or mini Oreo.
- Serve with a drizzle of chocolate syrup or a few chocolate chips on the plate.
- Add a side of cold milk, iced coffee, or hot espresso for a café-style treat.
- Dress it up for parties with a dusting of cocoa powder and extra cookie crumbs.
Cook’s Tips
- Don’t skip chilling: Tres leches cakes need time in the fridge to soak properly and firm up for clean slices.
- Poke deep holes: Go almost to the bottom of the cake so the milk mixture spreads throughout.
- Use room-temperature ingredients: Especially the eggs and milk in the batter for better rise and texture.
- Sturdy but soft cake: This sponge is slightly denser than a fluffy chiffon so it can handle all the milk without falling apart.
- Add Oreos at the end: For crunch, add most cookies as topping rather than mixing too many into the cake.
Variations & Add-Ins
- Extra chocolatey: Add 1/4 cup cocoa powder to the flour mixture and reduce flour by 1/4 cup for a chocolate-Oreo tres leches.
- Mocha twist: Add 1–2 tsp instant espresso powder to the tres leches mixture.
- Mini sheet cakes: Bake in two 8-inch square pans for smaller batches or to give one away.
- Different cookies: Swap Oreos for other chocolate sandwich cookies for a fun twist.
- Drizzle: Finish slices with chocolate ganache or caramel sauce.
Storage & FAQ
- Storage: Cover the pan tightly and refrigerate for up to 4 days. The flavor often improves after the first day, though the cookies on top will soften over time.
- Freezing: Tres leches cakes don’t freeze well once soaked and topped. For best texture, enjoy from the fridge only.
- Make-ahead: Bake, poke, and soak the cake a day in advance, then add whipped topping and Oreos the day you plan to serve.
- Soggy worries: It’s supposed to be very moist. As long as the cake holds its shape when sliced, you’re good.
- Can I use a cake mix? Yes—use a vanilla or white cake mix baked in a 9×13 pan, then proceed with poking and soaking, adding Oreos in the topping and garnish.
Oreo Tres Leches Sheet Cake combines ultra-moist tres leches texture with cookies-and-cream flavor: soft vanilla-Oreo sponge, rich three-milk soak, fluffy whipped topping, and a generous Oreo crunch. It slices beautifully, feeds a crowd, and is the perfect make-ahead dessert for any celebration.
The Best Oreo Tres Leches Sheet Cake You’ll Ever Try
An ultra-moist Oreo Tres Leches Sheet Cake made with a soft vanilla-and-Oreo sponge, soaked in a rich three-milk mixture and topped with fluffy whipped cream and crushed cookies. Perfect for parties, potlucks, and make-ahead desserts.
Ingredients
- For the Oreo Sheet Cake:
- 2 cups (260 g) all-purpose flour
- 2 tsp baking powder
- 1/2 tsp baking soda
- 1/2 tsp fine salt
- 1 1/4 cups (250 g) granulated sugar
- 1/2 cup (115 g) unsalted butter, softened
- 1/4 cup (60 ml) neutral oil
- 4 large eggs, room temperature
- 2 tsp vanilla extract
- 1 cup (240 ml) whole milk, room temperature
- 12 Oreo cookies, finely chopped or crushed
- For the Tres Leches Soak:
- 1 can (14 oz / 397 g) sweetened condensed milk
- 1 can (12 oz / 354 ml) evaporated milk
- 1 cup (240 ml) heavy cream or half-and-half
- 1 tsp vanilla extract
- Pinch of salt
- For the Topping & Garnish:
- 2 cups (480 ml) heavy whipping cream, cold
- 1/3–1/2 cup (40–60 g) powdered sugar, to taste
- 1 tsp vanilla extract
- 10–12 Oreo cookies, roughly crushed
- Optional: extra mini Oreos or Oreo halves for decorating
Instructions
- 1. Prep pan and oven
- 2. Preheat oven to 350°F (175°C).
- 3. Grease a 9×13-inch baking pan and line the bottom with parchment if desired.
- 4. Make the cake batter
- 5. In a bowl, whisk flour, baking powder, baking soda, and salt.
- 6. In a large mixing bowl, beat butter and sugar until light and creamy. Add oil and mix.
- 7. Beat in eggs one at a time, then add vanilla.
- 8. Add dry ingredients in two additions, alternating with milk, mixing just until combined.
- 9. Fold in crushed Oreos.
- 10. Bake the cake
- 11. Spread batter evenly in the prepared pan.
- 12. Bake for 25–30 minutes, or until a toothpick in the center comes out clean or with a few moist crumbs.
- 13. Cool in the pan on a rack for 15–20 minutes.
- 14. Mix tres leches soak & poke the cake
- 15. In a jug or bowl, whisk together condensed milk, evaporated milk, heavy cream (or half-and-half), vanilla, and a pinch of salt.
- 16. Using the handle of a wooden spoon or a skewer, poke holes all over the warm cake.
- 17. Slowly pour the milk mixture evenly over the cake.
- 18. Cover and refrigerate for at least 4 hours, preferably overnight.
- 19. Make the whipped topping
- 20. In a chilled bowl, beat cold heavy cream until it begins to thicken.
- 21. Add powdered sugar and vanilla and beat until medium-stiff peaks form.
- 22. Top and decorate
- 23. Spread whipped cream evenly over the chilled cake.
- 24. Sprinkle with crushed Oreos and decorate with extra cookies if desired.
- 25. Chill another 30 minutes, then slice and serve.
Notes
The cake is best made at least a day ahead so it has time to absorb the milk mixture fully.
For a stronger cookies-and-cream flavor, fold a few tablespoons of finely crushed Oreos into the whipped topping as well.
Add Oreos to the top close to serving if you want them to stay crunchy.
Don’t overbake the cake—pull it when it’s just done so it stays tender enough to soak up the milks.
Nutrition
Calories: ~380–430
Total Fat: ~23–26 g
Carbohydrates: ~42–48 g
Protein: ~7–9 g
Sugar: ~32–36 g