Tasty Eggless Oreo Brownies

If you ask me, brownies studded with Oreos are pure comfort food genius.

These eggless brownies deliver all the fudgy richness you crave without a single egg in the batter. The tender crumb comes from a simple swap of milk mixed with vinegar, while chunks of chocolate and crushed sandwich cookies create pockets of texture throughout.

They’re mixed up in one bowl with everyday ingredients like butter, cocoa powder, and a touch of espresso powder to deepen the chocolate flavor. The Oreos get folded right into the batter, adding a cookies-and-cream twist to every bite.

It’s a recipe that works for anyone avoiding eggs or just looking to try something a little different with their brownie routine.

What Kind of Oreo Cookies Should I Use?

The classic original Oreos work perfectly for these brownies, but feel free to get creative with different flavors if you want to mix things up. Double Stuf Oreos will give you extra creaminess, while Golden Oreos can add a slightly different flavor profile to your brownies. You can also try seasonal varieties like mint or peanut butter Oreos if you’re feeling adventurous. When it comes to prep, you can either break the Oreos into chunks for bigger cookie pieces throughout or crush them into smaller bits for a more even distribution – both methods taste great, so it really just depends on your personal preference.

Options for Substitutions

This brownie recipe is pretty adaptable, so here are some swaps you can make:

• Milk and apple cider vinegar: These two create a buttermilk substitute, but you can use actual buttermilk if you have it. Just use 1 cup of buttermilk and skip the vinegar. Regular white vinegar or lemon juice work in place of apple cider vinegar too.
• Butter: You can swap butter with coconut oil or vegetable oil for a dairy-free version. Use the same amount, but note that oil will make the brownies slightly denser.
• Brown sugar: If you’re out of brown sugar, mix 3/4 cup white sugar with 1 tablespoon molasses. Or just use all granulated sugar – your brownies will be a bit less chewy but still tasty.
• Espresso powder: This just boosts the chocolate flavor, so if you don’t have it, you can leave it out or use a teaspoon of instant coffee granules instead.
• Oreo cookies: Any sandwich cookie works here – try chocolate chip cookies, Hydrox cookies, or even peanut butter sandwich cookies for a fun twist. Keep the Oreos though if you want that classic cookies and cream flavor.
• Cornstarch: This helps bind the batter since there are no eggs. Don’t skip it, but if you’re really in a bind, you can use an extra tablespoon of flour instead.

Watch Out for These Mistakes While Baking

The biggest mistake with eggless brownies is overbaking them, which leads to dry, cake-like results instead of fudgy squares – pull them out when a toothpick inserted in the center comes out with a few moist crumbs, not completely clean.

Skipping the milk and vinegar resting step is another common error, as this creates a buttermilk substitute that helps the brownies rise and stay moist without eggs.

Make sure your butter mixture cools for a few minutes before adding the cocoa powder, otherwise the heat can cause the cocoa to seize up and create a grainy texture.

Finally, resist the urge to cut into these brownies right away – letting them cool completely in the pan helps them set properly and makes slicing much cleaner.

What to Serve With Oreo Brownies?

These brownies are pretty rich and decadent on their own, so they pair perfectly with a cold glass of milk or a scoop of vanilla ice cream on top. If you’re serving them at a party, consider setting out some fresh berries like strawberries or raspberries on the side to balance out the sweetness. A dollop of whipped cream or even some extra crushed Oreos sprinkled on top makes them feel extra special. For a cozy movie night, serve them warm with a mug of hot coffee or hot chocolate for the perfect dessert experience.

Storage Instructions

Store: Keep your Oreo brownies in an airtight container at room temperature for up to 3 days, or in the fridge for up to a week. I actually prefer them cold from the fridge because they get extra fudgy and the Oreos stay nice and crunchy.

Freeze: These brownies freeze really well for up to 3 months. Cut them into individual squares and wrap each one in plastic wrap, then store in a freezer bag. That way you can grab just one or two whenever a chocolate craving hits!

Serve: Let frozen brownies thaw at room temperature for about 30 minutes, or if you’re impatient like me, pop them in the microwave for 15-20 seconds. They taste amazing slightly warm with a scoop of vanilla ice cream on top.

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 3250-3550
• Protein: 30-36 g
• Fat: 190-210 g
• Carbohydrates: 400-430 g

Ingredients

For the dry mix:

• 1 1/4 cups all-purpose flour
• 1 tbsp cornstarch
• 1/4 tsp baking powder
• 1 tsp salt

For the batter:

• 1 cup milk
• 2 tsp apple cider vinegar
• 1 cup butter
• 3/4 cup brown sugar (packed firmly for better moisture)
• 3/4 cup sugar
• 1/2 cup cocoa powder (sifted to remove lumps)
• 2 1/2 tsp vanilla extract
• 1 1/2 tsp espresso powder
• 4 oz chocolate (chopped into 1/2-inch pieces)
• 14 sandwich cookies (roughly crushed into 1-inch chunks)

Step 1: Prepare the Pan and Dry Ingredients

• 1 1/4 cups all-purpose flour
• 1 tbsp cornstarch
• 1/4 tsp baking powder
• 1 tsp salt

Preheat your oven to 325°F and line a 9×13 inch baking pan with parchment paper, allowing it to extend up the sides for easy removal later.

While the oven heats, whisk together the flour, cornstarch, baking powder, and salt in a medium bowl.

Set this dry mixture aside—having it ready will speed up assembly once you start working with the wet ingredients.

Step 2: Create the Vegan Milk Base

• 1 cup milk
• 2 tsp apple cider vinegar

Combine the milk and apple cider vinegar in a small bowl and let it sit for 5-8 minutes.

This creates a vegan buttermilk substitute that will add tanginess and help activate the baking powder, giving your brownies a better texture and subtle depth.

Don’t skip the resting time—it matters for the chemical reaction.

Step 3: Build the Chocolate Batter Base

• 1 cup butter
• 3/4 cup brown sugar
• 3/4 cup sugar
• vegan milk mixture from Step 2
• 1/2 cup cocoa powder
• 2 1/2 tsp vanilla extract
• 1 1/2 tsp espresso powder

In a large bowl, melt the butter over medium heat (or use the microwave in 30-second intervals), then remove from heat and stir in the brown sugar and sugar for 2-3 minutes until well combined.

Add the vegan milk mixture from Step 2 and microwave the entire mixture for 2 minutes to help dissolve the sugars completely.

Whisk vigorously for 1-2 minutes until the mixture is smooth and the sugar is fully incorporated—this helps create a fudgy texture.

Sift the cocoa powder directly into the mixture and stir for about 2 minutes until there are no lumps and the color is even.

The chocolate should be fully hydrated and silky.

Stir in the vanilla extract and espresso powder, which will deepen the chocolate flavor without making the brownies taste like coffee.

Step 4: Combine Wet and Dry Ingredients

• dry ingredient mixture from Step 1
• chocolate batter from Step 3

Add the dry ingredient mixture from Step 1 to the chocolate batter from Step 3 and stir until just combined—don’t overmix, as this can develop too much gluten and make the brownies tough.

The batter should come together with a few streaks of flour remaining is fine.

I like to fold rather than stir at this point, using a gentle hand to incorporate everything while keeping the batter light and fudgy.

Step 5: Fold in Mix-ins and Assemble

• 4 oz chocolate, chopped
• 14 sandwich cookies, crushed into 1-inch chunks

Gently fold the chopped chocolate pieces and most of the crushed Oreo chunks (reserve about 1/4 cup for topping) into the batter using a rubber spatula.

Pour the batter into your prepared pan, smoothing the top with a spatula, then scatter the reserved Oreos evenly across the surface, pressing them down slightly so they stay on top during baking.

Step 6: Bake and Cool

Bake for 40-50 minutes at 325°F, until the edges are set but the center still jiggles slightly when you gently shake the pan—this is key for fudgy brownies.

The baking time will vary depending on your oven, so start checking around 40 minutes.

Let the brownies cool in the pan for at least 15 minutes before cutting into squares.

I find that cooling them completely (or even chilling them in the refrigerator for an hour) makes them much easier to cut cleanly and improves the texture.

Tasty Eggless Oreo Brownies

Delicious Tasty Eggless Oreo Brownies recipe with step-by-step instructions.

Print Recipe Pin Recipe

Prep Time 25 minutes mins

Cook Time 45 minutes mins

Total Time 1 hour hr 10 minutes mins

Servings: 16 pieces

Calories: 3400

Ingredients Method

Ingredients

  

For the dry mix::

• 1 1/4 cups all-purpose flour
• 1 tbsp cornstarch
• 1/4 tsp baking powder
• 1 tsp salt

For the batter::

• 1 cup milk
• 2 tsp apple cider vinegar
• 1 cup butter
• 3/4 cup brown sugar (packed firmly for better moisture)
• 3/4 cup sugar
• 1/2 cup cocoa powder (sifted to remove lumps)
• 2 1/2 tsp vanilla extract
• 1 1/2 tsp espresso powder
• 4 oz chocolate (chopped into 1/2-inch pieces)
• 14 sandwich cookies (roughly crushed into 1-inch chunks)

Method

 

1. Preheat your oven to 325°F and line a 9x13 inch baking pan with parchment paper, allowing it to extend up the sides for easy removal later. While the oven heats, whisk together the flour, cornstarch, baking powder, and salt in a medium bowl. Set this dry mixture aside—having it ready will speed up assembly once you start working with the wet ingredients.
2. Combine the milk and apple cider vinegar in a small bowl and let it sit for 5-8 minutes. This creates a vegan buttermilk substitute that will add tanginess and help activate the baking powder, giving your brownies a better texture and subtle depth. Don't skip the resting time—it matters for the chemical reaction.
3. In a large bowl, melt the butter over medium heat (or use the microwave in 30-second intervals), then remove from heat and stir in the brown sugar and sugar for 2-3 minutes until well combined. Add the vegan milk mixture from Step 2 and microwave the entire mixture for 2 minutes to help dissolve the sugars completely. Whisk vigorously for 1-2 minutes until the mixture is smooth and the sugar is fully incorporated—this helps create a fudgy texture. Sift the cocoa powder directly into the mixture and stir for about 2 minutes until there are no lumps and the color is even. The chocolate should be fully hydrated and silky. Stir in the vanilla extract and espresso powder, which will deepen the chocolate flavor without making the brownies taste like coffee.
4. Add the dry ingredient mixture from Step 1 to the chocolate batter from Step 3 and stir until just combined—don't overmix, as this can develop too much gluten and make the brownies tough. The batter should come together with a few streaks of flour remaining is fine. I like to fold rather than stir at this point, using a gentle hand to incorporate everything while keeping the batter light and fudgy.
5. Gently fold the chopped chocolate pieces and most of the crushed Oreo chunks (reserve about 1/4 cup for topping) into the batter using a rubber spatula. Pour the batter into your prepared pan, smoothing the top with a spatula, then scatter the reserved Oreos evenly across the surface, pressing them down slightly so they stay on top during baking.
6. Bake for 40-50 minutes at 325°F, until the edges are set but the center still jiggles slightly when you gently shake the pan—this is key for fudgy brownies. The baking time will vary depending on your oven, so start checking around 40 minutes. Let the brownies cool in the pan for at least 15 minutes before cutting into squares. I find that cooling them completely (or even chilling them in the refrigerator for an hour) makes them much easier to cut cleanly and improves the texture.