Everyone loves a good s'more — they just bring back the best childhood memories! Turn those classic flavors into a great cookie bar with another childhood favorite: the Oreo. You'll have a big hit on your hands!
![S'mOreo Cookie Bars Recipe](https://img.ehowcdn.com/375/clsd/7/1/d733a34f72cf40d4a35fae6b5dde157b.jpg)
Things You'll Need
9 whole graham cracker sheets
1 tablespoon brown sugar
4 tablespoons, plus ½ cup butter, melted (divided)
1 cup granulated sugar
1 teaspoon vanilla extract
2 large eggs
¼ cups vegetable oil
2/3 cups all purpose flour
⅓ cups unsweetened cocoa powder
½ teaspoons salt
¼ teaspoons baking powder
12 whole Oreo cookies chopped
1 (10 oz) bag mini marshmallows
![S'mOreo Cookie Bars Recipe](https://img.ehowcdn.com/375/clsd/7/1/3a15724cf6624918ba7d1578c84175b4.jpg)
Step 1: Crush the graham crackers
Preheat the oven to 350ºF. In a food processor, add the graham crackers and pulse until only fine crumbs remain.
Video of the Day
![S'mOreo Cookie Bars Recipe](https://img.ehowcdn.com/375/clsd/7/1/a813674152be4b9abb8a16e920f44c20.jpg)
Step 2: Add the butter and sugar
Add the brown sugar and 4 tablespoons melted butter, and process until combined. It will look like wet sand.
![S'mOreo Cookie Bars Recipe](https://img.ehowcdn.com/375/clsd/7/1/088e0c4ccd7f43cc8b75f01fe5c423ee.jpg)
Step 3: Press into the pan
In a greased and floured 9×13" baking pan, add the graham crackers to the bottom and press into the pan.
![S'mOreo Cookie Bars Recipe](https://img.ehowcdn.com/375/clsd/7/1/44a2509c0742486b8c26539f5d5f5250.jpg)
Step 4: Mix the eggs and sugar
In a large bowl, whisk together the eggs and sugar.
![S'mOreo Cookie Bars Recipe](https://img.ehowcdn.com/375/clsd/7/1/90a8d7338e85480aaf84df2ed7cff87d.jpg)
Step 5: Add the oil and butter
Add the oil and remaining 1/2 cup melted butter, then whisk until well combined.
![S'mOreo Cookie Bars Recipe](https://img.ehowcdn.com/375/clsd/7/1/4d31bffe923b4dab999fa8a9687ff008.jpg)
Step 6: Add the dry ingredients
Add the flour, cocoa powder, salt and baking powder; whisk until well combined.
![S'mOreo Cookie Bars Recipe](https://img.ehowcdn.com/375/clsd/7/1/d26e7230d58448f7a9793883620ea176.jpg)
Step 7: Add the Oreos
Crush the Oreo cookies and stir into the batter.
![S'mOreo Cookie Bars Recipe](https://img.ehowcdn.com/375/clsd/7/1/c6bc556d06734032a804e591104938ad.jpg)
Step 8: Add to the pan
Pour the batter over the crust in an even layer.
![S'mOreo Cookie Bars Recipe](https://img.ehowcdn.com/375/clsd/7/1/8a048240b3d24473b88949d7028e5fc5.jpg)
Step 9: Add the marshmallows
Sprinkle the marshmallows over the filling in an even layer.
![S'mOreo Cookie Bars Recipe](https://img.ehowcdn.com/375/clsd/7/1/568df8eb971d4182bbbcacd9d081ee59.jpg)
Step 10: Bake
Bake for 22-25 minutes or until the marshmallows are golden brown. Remove from oven and allow to cool to room temperature before cutting, and chill if necessary.
For an added campfire-ier taste, run a kitchen torch over the top.
![S'mOreo Cookie Bars Recipe](https://img.ehowcdn.com/375/clsd/7/1/04ba598b7c3343e0900d8162a802a539.jpg)
Video of the Day