Get ready to bring some spooky fun to your kitchen with these Frankenstein Matcha Brownies. They are not just adorable to look at; they are packed with the earthy, rich flavor of high-quality green tea and sweet white chocolate. Whether you are hosting a Halloween party or looking for a fun weekend baking project with the kids, these vibrant green treats are guaranteed to be a showstopper.
The naturally bright green color of matcha makes it the perfect base for creating little edible monsters. Unlike traditional chocolate brownies, these have a unique “blondie” texture that is dense, fudgy, and incredibly satisfying. Let’s dive into how you can create these monstrously delicious treats at home.
Recipe Information
- Prep Time: 20 minutes
- Cook Time: 25 minutes
- Total Time: 45 minutes
- Servings: 16 squares
- Difficulty Level: Medium
Nutrition Information
- Calories per serving: 185 kcal
- Protein: 3g
- Carbohydrates: 24g
- Fat: 9g
- Fiber: 1g
- Sugar: 16g
- Sodium: 85mg
Why Make This Frankenstein Matcha Brownies Recipe
This recipe is the perfect balance of flavor and creativity. While many Halloween treats rely heavily on artificial food coloring, these brownies get their striking green hue naturally from matcha powder. The earthy notes of the green tea pair beautifully with the sweetness of white chocolate, creating a sophisticated flavor profile that adults will love just as much as children.
Making these brownies is also a fantastic way to get creative in the kitchen. Decorating each square to look like Frankenstein’s monster allows you to personalize your dessert. It is a fun, hands-on activity that results in a dessert that is as much a craft project as it is a culinary delight.
How to Make Frankenstein Matcha Brownies Recipe
Creating these spooky treats is easier than you might think. You will start by making a thick, fudgy matcha base and then move on to the most exciting part: the decorations! Follow these steps to ensure your monsters turn out perfectly every time.
Ingredients
- 1 cup all-purpose flour
- 2 tablespoons culinary-grade matcha powder
- 1/2 teaspoon salt
- 1/2 cup unsalted butter, melted
- 6 ounces white chocolate chips, melted
- 3/4 cup granulated sugar
- 2 large eggs, room temperature
- 1 teaspoon vanilla extract
- 1/2 cup mini chocolate chips (for the hair)
- 32 edible candy eyes
- 1 tube black decorating icing or melted dark chocolate
Directions
Step 1: Preheat and Prepare
Preheat your oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment paper, leaving a little overhang on the sides so you can easily lift the brownies out later. Lightly grease the parchment with cooking spray or butter.
Step 2: Combine Dry Ingredients
In a medium-sized bowl, whisk together the all-purpose flour, matcha powder, and salt. Make sure to sift the matcha powder if it looks lumpy to ensure a smooth green color throughout your batter.
Step 3: Mix the Wet Ingredients
In a large bowl, whisk the melted butter and granulated sugar together until well combined. Add the eggs one at a time, beating well after each addition. Stir in the melted white chocolate and vanilla extract until the mixture is smooth and glossy.
Step 4: Fold and Bake
Gradually add the dry ingredients to the wet ingredients. Use a spatula to gently fold everything together until just combined. Do not overmix. Pour the batter into your prepared pan and smooth the top. Bake for 22–25 minutes, or until a toothpick inserted in the center comes out with just a few moist crumbs.
Step 5: Cool and Cut
Allow the brownies to cool completely in the pan. This is very important for getting clean cuts. Once cool, use the parchment paper to lift the brownies out of the pan. Cut them into 16 equal-sized rectangles.
Step 6: Create the Hair
Melt a small amount of extra chocolate or use black icing to create a “glue” at the top of each brownie rectangle. Arrange mini chocolate chips in a jagged line at the top of the rectangle to resemble Frankenstein’s messy hair.
Step 7: Final Decorations
Use a small dot of icing to attach two candy eyes to each brownie. Finally, use the black decorating icing to draw a straight or stitched line for the mouth and a small “scar” on the cheek. Your Frankenstein monsters are ready!
How to Serve Frankenstein Matcha Brownies Recipe
Serve these brownies on a large white platter to make the green color pop. They look fantastic at a dessert table for a Halloween party. If you want to go the extra mile, you can serve them alongside a glass of milk or even a matcha latte for a themed afternoon snack.
How to Store Frankenstein Matcha Brownies Recipe
To keep your brownies fresh, store them in an airtight container at room temperature for up to 3 days. If you need them to last longer, you can keep them in the refrigerator for up to a week. Just make sure the icing or chocolate decorations have fully set before stacking them, or use parchment paper between layers to prevent sticking.
Expert Tips for Perfect Frankenstein Matcha Brownies Recipe
First, always use high-quality culinary-grade matcha. This ensures the color stays vibrant after baking and the flavor isn’t overly bitter. Second, be careful not to overbake the brownies; they should stay moist and fudgy. Lastly, if you find it hard to draw with icing, try using a toothpick dipped in melted chocolate for more precision when creating the facial features.

Delicious Variations
For a different texture, you can fold in white chocolate chips or chopped nuts into the batter before baking. If you want a more “minty” monster, add a half teaspoon of peppermint extract to the mix. You can also swap the mini chocolate chips for crushed chocolate sandwich cookies to create a different look for the hair.
Frequently Asked Questions
Q: Can I use ceremonial grade matcha?
Yes, you can, but ceremonial grade is usually more expensive and intended for drinking. Culinary grade is perfectly suited for baking and usually provides a stronger color in the oven.
Q: My brownies turned brown on top, what happened?
If the brownies are browning too much, it usually means they were in the oven too long or the temperature was too high. You can tent the pan with foil halfway through baking to preserve the green color.
Q: Can I make these gluten-free?
Yes! You can substitute the all-purpose flour with a 1:1 gluten-free baking flour blend. The texture may vary slightly, but they will still be delicious.
Q: How do I get the white chocolate to melt smoothly?
White chocolate can be finicky. Melt it in short 20-second bursts in the microwave, stirring well between each burst, or use a double boiler on low heat.
Q: Can I freeze these brownies?
Yes, you can freeze them for up to 2 months. It is best to freeze them before decorating, as the candy eyes and icing may not hold up well during the thawing process.
Conclusion
These Frankenstein Matcha Brownies are the perfect combination of spooky, sweet, and unique. They offer a refreshing change from the usual chocolate-heavy holiday treats while still satisfying any sweet tooth. We hope you enjoy making and eating these adorable little monsters as much as we do! Happy baking!

Frankenstein Matcha Brownies Recipe
- Cook Time: 45 minutes
- Total Time: 45 minutes
- Diet: Vegetarian
Ingredients
- 1 cup all-purpose flour
- 2 tablespoons culinary-grade matcha powder
- 1/2 teaspoon salt
- 1/2 cup unsalted butter, melted
- 6 ounces white chocolate chips, melted
- 3/4 cup granulated sugar
- 2 large eggs, room temperature
- 1 teaspoon vanilla extract
- 1/2 cup mini chocolate chips (for the hair)
- 32 edible candy eyes
- 1 tube black decorating icing or melted dark chocolate
Instructions
- Step 1: Preheat and Prepare. Preheat your oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment paper, leaving a little overhang on the sides so you can easily lift the brownies out later. Lightly grease the parchment with cooking spray or butter.
- Step 2: Combine Dry Ingredients. In a medium-sized bowl, whisk together the all-purpose flour, matcha powder, and salt. Make sure to sift the matcha powder if it looks lumpy to ensure a smooth green color throughout your batter.
- Step 3: Mix the Wet Ingredients. In a large bowl, whisk the melted butter and granulated sugar together until well combined. Add the eggs one at a time, beating well after each addition. Stir in the melted white chocolate and vanilla extract until the mixture is smooth and glossy.
- Step 4: Fold and Bake. Gradually add the dry ingredients to the wet ingredients. Use a spatula to gently fold everything together until just combined. Do not overmix. Pour the batter into your prepared pan and smooth the top. Bake for 22–25 minutes, or until a toothpick inserted in the center comes out with just a few moist crumbs.
- Step 5: Cool and Cut. Allow the brownies to cool completely in the pan. This is very important for getting clean cuts. Once cool, use the parchment paper to lift the brownies out of the pan. Cut them into 16 equal-sized rectangles.
- Step 6: Create the Hair. Melt a small amount of extra chocolate or use black icing to create a “glue” at the top of each brownie rectangle. Arrange mini chocolate chips in a jagged line at the top of the rectangle to resemble Frankenstein’s messy hair.
- Step 7: Final Decorations. Use a small dot of icing to attach two candy eyes to each brownie. Finally, use the black decorating icing to draw a straight or stitched line for the mouth and a small “scar” on the cheek. Your Frankenstein monsters are ready!




