Halloween Monster Cookie Brownies

These Halloween Monster Cookie Brownies are easy to make and so much fun! They are perfect for a Halloween party or any time you want a spooky treat!

Jump to:

• ❤️ Why you'll love this recipe
• Ingredients
• Equipment
• Instructions
• How to store, reheat, and freeze
• Expert Tips
• Frequently Asked Questions
• Variations
• Serving Suggestions
• Similar recipes
• Halloween Monster Cookie Brownies
• 💬 Comments

❤️ Why you'll love this recipe

• These brownies are super easy to make and only require a few simple ingredients.
• Plus, they are perfect for decorating however you like!
• This dessert is bound to wow your friedns and family at your Halloween party!

Ingredients

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Brownies

• Brownies mix + ingredients listed on the boxes to make the brownies

Cookie Dough

• creamy peanut butter
• unsalted butter, room temperature
• light brown sugar
• white granulated sugar
• large eggs
• pure vanilla extract
• all-purpose flour
• baking soda
• Kosher salt
• quick cooking oats
• miniature chocolate chips
• Halloween sprinkles
• Candy eye decorations

Vanilla Frosting

• unsalted butter, room temperature
• confectioners sugar
• pure vanilla extract
• heavy whipping cream

Decorations

• Neon green gel food coloring
• small candy eye decorations

Equipment

• 9" x 13" cake pan
• Disposable Piping Bags
• 1A round tip
• Parchment Paper
• Stand Mixer
• Measuring Spoons and Cups

Instructions

This is an overview of the recipe. The full instructions are below in the recipe card.

1. Preheat oven to 350°F/177°C. Spray a 9" X 13" baking pan with nonstick baking spray. Line the baking pan with parchment paper with extra on the four sides.

Brownies

1. Follow the ingredient list and baking directions listed on the back of the boxes. Put the batter in the prepared baking pan. Set aside. ( Both boxes will go into the one pan)

Cookie Dough

1. In the bowl of a stand mixer, using paddle attachment, cream together the peanut butter and soft butter, until well combined, about 4 to 5 minutes. The mixture will be smooth and fluffy.
2. To the peanut butter mixture, add the brown sugar, white sugar, eggs, and vanilla. Beat until completely mixed, about 4 minutes.
3. In a separate medium-sized mixing bowl, whisk dry ingredients flour, baking soda, and salt. Stir in the oats and chocolate chips.
4. Slowly add and mix the dry ingredients into the peanut butter mixture until combined.

Assemble the brownies

1. Use a serving spoon to drop the oatmeal mixture over the brownie batter.
2. Sprinkle the Halloween sprinkles and the large candy eyes over the top.
3. Bake in the preheated oven for 25-25 minutes. Insert a toothpick in the center, brownies are cooked through when the toothpick comes out clean.
4. When done, set on a counter for at least 30 minutes to cool. Remove from the baking pan.

Frosting

1. In the bowl of a stand mixer, using the beater attachment, beat the butter, powdered sugar, vanilla, and heavy whipping cream until combined, creamy, and stiff.
2. Beat in a few drops of neon green food coloring and mix until blended
3. Allow frosting to firm up before enjoying!
4. Beat in a few drops of neon green food coloring and mix until blended.
5. Scoop the frosting into the piping bag. Pipe big and small dollops on the brownies. Place two mini candy eyes in each dollop of frosting.
6. Let the frosting harden before slicing and serving.

How to store, reheat, and freeze

Storing - Store these Halloween Monster Cookie Brownies in an airtight container at room temperature for up to five days.

Freezing - You can freeze these Halloween brownies in a freezer-safe container for up to two months. I recommend that you freeze them unfrosted and then frost them after they are thawed.

Thawing - Thaw frozen brownies at room temperature for two to three hours.

Expert Tips

Expert Tip: Be careful to not overmix the batter for these brownies. Mix the brownies until they are just combined. Overmixing can result in tough brownies.

Frequently Asked Questions

Variations

Do you want to change up this recipe? Here are some ways that you increase the flavor of this dish.

• Add ½ cup of chopped nuts to your brownies for additional flavor and crunch. I like to use walnuts or pecans.
• You can also mix in ½ cup of chocolate chips or chocolate chunks for more rich flavor.
• If you don't like sprinkles you can leave them out of these brownies.
• Serve these brownies with a scoop of vanilla ice cream and hot fudge sauce for an extra delicious treat!

Serving Suggestions

• Start off your Halloween meal or party with these Chicken Bacon Ranch Mummy Pizzas for a spooktacular meal.
• These Monster Eye Cookies are decorated with the cutest little eye candies for a festive Halloween treat that is so festive and everyone loves them.  They will look great on your dessert table.
• Don't leave out the adults for your holiday meal whip up a batch of these Witches Brew Cocktails for an adult beverage that will pleasure your guests.

Similar recipes

• These Halloween Cake Bars are soft gooey cookie bars that are filled with Halloween Oreos, sprinkles, and a sweet taste. If are seeking a sweet treat to serve at your next Halloween party, then this is the recipe for you!
• These Spider Halloween Donuts are the perfect spooky and delicious treat for your Halloween party! They are a great way to start off Halloween morning!
• These Bloody Finger Cupcakes look like they take a lot of work but they come together quickly with a box mix. Your guest will love these spooky cupcakes.

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Eileen  xo

If you click on the number of servings in the recipe card you can adjust the measurements up or down for the exact number of servings you need.

If you love this recipe please give it 5 stars! ⭐️⭐️⭐️⭐️⭐️