Can I Use a Boxed Brownie Mix?

Absolutely! In fact, this recipe is built around convenience and flavor using a boxed mix. Most standard 18.4 oz brownie mixes (like Ghirardelli or Betty Crocker) work perfectly. Just make sure it’s designed for an 8x8" or 9x9" pan. If you want to elevate it even further, consider adding a splash of vanilla extract or a handful of chocolate chips to the batter.

Can I Substitute Oreos with Other Cookies?

You sure can. While classic Oreos give the best texture and contrast, other sandwich cookies like Golden Oreos, Mint Oreos, or even store-brand chocolate cookies work well too. Just avoid Double Stuf varieties—they tend to ooze too much when baked, making the brownies overly soft in the center.

What’s the Ideal Baking Time?

Bake at 350°F for 30 to 35 minutes . Check doneness by inserting a toothpick just off-center—it should come out with a few moist crumbs. If it’s completely wet, give it another 3–5 minutes. For cleaner slices, refrigerate for an hour before cutting.

How Should I Store Leftovers?

Store your Oreo stuffed brownies in an airtight container at room temperature for up to 5 days . For longer storage, wrap individual pieces in plastic wrap and freeze them for up to 3 months . To enjoy later, thaw at room temp or warm slightly in the microwave.

10 Sinfully Delicious Oreo Stuffed Brownies You Need to Try

Name: 10 Sinfully Delicious Oreo Stuffed Brownies You Need to Try
Prep time: 10 min
Cook time: 35 min
Total time: 45 min
Cuisine: American
Ingredients: 1 (18.4 oz) package brownie mix; 1/4 cup vegetable oil; 1/4 cup water; 1 egg; 16 chocolate sandwich cookies (like Oreos); Non-stick cooking spray; 1/2 cup chocolate chips (optional); 1/4 tsp sea salt flakes (optional); 1/2 tsp vanilla extract (optional)

Description

Bake rich, fudgy Oreo stuffed brownies layered with cookies and cream! Easy to make, ultra-moist, and loaded with decadent chocolate flavor.

Ingredients

Scale

1 (18.4 oz) package brownie mix
1/4 cup vegetable oil
1/4 cup water
1 egg
16 chocolate sandwich cookies (like Oreos)
Non-stick cooking spray
1/2 cup chocolate chips (optional)
1/4 tsp sea salt flakes (optional)
1/2 tsp vanilla extract (optional)

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Instructions

Preheat oven to 350°F. Grease pan or line with parchment.
Prepare brownie batter by mixing brownie mix, oil, water, and egg.
Spread half of batter in pan, place Oreos in a single layer, then cover with remaining batter.
Bake for 30–35 minutes or until center is just set.
Cool in pan for 10 minutes before slicing.

Prep Time: 10 minutes
Cook Time: 35 minutes
Category: Dessert
Method: Baking
Cuisine: American