These Marshmallow Brookies have a layer of chocolate cookie, a layer of fudgy brownie, and a layer of toasted marshmallows. They are the perfect fusion of three delicious desserts.

If you asked me to choose between a warm chocolate chip cookie, a fudgy brownie, or a perfectly toasted marshmallow I would be hard-pressed to make a choice. Roll all three of those together and you have basically created a dream dessert!

The name brookie comes from the combination of brownies and cookies in this recipe, in case you hadn't picked up on that already. I made each of these layers individually, but you could also pick up some premade cookie dough, a box of brownie mix, and some marshmallows and call it a day. You can go wrong with this combination, homemade or not!

Ingredients for Marshmallow Brookies:

Ingredients for Chocolate Chip Cookie Layer:

• Unsalted butter. I always make sure to use unsalted butter when baking because there is no “standard” for the amount of salt they can add to butter. So if you add salt to a recipe and then use salted butter you could end up with a very salty end product.
• Granulated Sugar. This will sweeten the cookie dough and make it chewier.
• Brown sugar. Brown sugar adds a softer texture to the finished product.
• Eggs. It will be easier to incorporate the eggs into the batter if they are at room temperature.
• Vanilla extract. Vanilla is a must in baked goods just like salt. Real vanilla adds a better flavor than imitation vanilla.
• All-purpose flour. Measuring the flour correctly is very important. I suggest weighing your flour out (I use this scale). If you want to use a measuring cup, make sure you spoon the flour into the cup and level it off with a knife. Don’t use the cup to scoop directly from the flour.
• Baking soda. This will help the cookies to rise.
• Baking powder. This will also help the cookies to rise.
• Salt. Salt is a must in baked goods. It will help to balance out the sweetness and improve the overall flavor.
• Chocolate, chopped, or chocolate chips. I prefer semi-sweet chocolate, but you can use whatever you prefer.

Ingredients for Fudgy Brownie Layer:

• Unsalted Butter. See above note.
• Brown Sugar. See above note.
• Eggs. See above note.
• Vanilla Extract. See above note.
• All-purpose Flour. See above note.
• Cocoa Powder. This adds to the chocolatey flavor of the brownies.
• Salt. See above note.
• Chocolate. See above note.

Ingredients for Toasted Marshmallow Layer:

• Mini Marshmallows. You can also use regular sized marshmallows if you already have them on hand.

How to make Marshmallow Brookies

Chocolate Chip Cookie Layer

STEP 1: Preheat oven to 350 degrees (F). Spray an 8x8 pan with non-stick spray and line with parchment paper, leave an overhang to make it easy to remove the baked brookies.

STEP 2: In a large bowl using a hand mixer or in the bowl of a stand mixer cream together the butter, granulated sugar, and brown sugar until light and fluffy.

STEP 2: Add the eggs one at a time, mixing fully before adding the next. Pour in the vanilla and combine.

STEP 4: In a medium bowl combine the flour, baking soda, baking powder, and salt. Whisk to combine.

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STEP 5: Add the dry ingredients to the wet ingredients and mix until just combined. Be sure not to over mix.

STEP 6: Fold in the chocolate chips or the chopped chocolate.

STEP 7: Break chunks of cookie dough off and place them in the bottom of the pan. The chunks should be about ½ to 1 inch. Repeat until there are only small gaps without cookie dough.

STEP 8: Allow the dough to chill while you make the brownie batter.

Fudgy Brownie Layer

STEP 1: In a medium bowl mix with a hand mixer combine the melted butter and brown sugar. When fully combined add the eggs and vanilla. Beat until fully combined and light in color.

STEP 2: In a small bowl combine the flour, cocoa powder, and salt. Whisk to combine and remove any lumps.

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STEP 4: Add the dry ingredients to the wet ingredients. Mix until just combined.

STEP 5: Fold the chocolate into the mixture.

STEP 6: Pour the brownie batter over the chilled cookie dough.

Toasted Marshmallow Layer

STEP 1: Sprinkle the mini marshmallows over the top of the brookies until almost all of the brownie batter is covered. The marshmallows will spread while baking. If you are using regular-sized marshmallows I recommend cutting them up.

STEP 2: Bake for 35-40 minutes or until a toothpick inserted in the center comes out with only a few moist crumbs.

STEP 3: Allow to cool completely in pan. Lift the Marshmallow Brookies out of the pan and cut into 16 squares.

More Bar Recipes

• Snickers Cookie Bars- These bars have a shortbread base topped with a caramel and peanut mixture and a layer of chocolate.
• No-Bake S'mores Bars- Golden graham cereal, marshmallows, and chocolate chips are combined to make these yummy bars.
• Rhubarb Bars- A shortbread crust topped with a rhubarb custard.
• Glazed Cherry Bars- A cookie base with a cherry pie filling and chunks of cookie on top.

More Bar Recipes from Kitchen 335

• Banana Pudding Cheesecake Bars- a nilla wafer crust and a creamy banana flavored cheesecake.
• Apple Crumble Bars- shortbread crust, a tart apple filling, and a sweet crumble topping.
• Cookies and Cream Bars- the perfect crinkly top and gooey center packed full of crushed oreo cookies.
• Fudgy Brownies- the best homemade brownie recipe. They are loaded with melty chocolate and perfectly gooey.

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Recipe originally posted October 2019.

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