These rich and fudgy Kit Kat Brownies are as amazing as they sound! With Kit Kats running through each bite, if you're a fan, you have to try them.
What's better than freshly baked fudgy brownies? Freshly baked fudgy fully loaded Kit Kat brownies, that's what!
So easy to make and yet so moreish, I'm pretty sure no one can resist these. Stuffed with chopped Kit Kats inside, with more laid on top (just in case you missed them).
Why You Should Make These Kit Kat Stuffed Brownies
- This indulgent Brownies recipe is easily doubled up for batch baking. So why not enjoy some now and freeze the rest for later.
- All the ingredients are beaten together in one bowl - so there's no need to use an electric mixer or food processor.
- Brownies are quick and simple to prepare - so are perfect for cooking with kids.
- If you are a chocolate lover, why not try my easy Chocolate Pots or my Gluten Free Chocolate Raspberry brownies.
Kit Kat Brownies Ingredients
Find the full list and quantities in the recipe below.
Kit Kats - my recipe uses 16 x 2 bar snack size Kit Kats. I used milk chocolate bars in my brownies, but you could use other varieties and flavors too, like dark chocolate or chocolate orange Kit Kat Bars.
Chocolate Chips - I use semi-sweet dark chocolate chips, which are perfect here as they melt really quickly. You can also use any variety of chocolate bar, milk or dark, just make sure you break it up to make it easy to melt.
Cocoa - regular cocoa powder has a rich, intense flavor and real acidity to it. It adds a bitter note, which balances out the sweet chocolate bars. You can also use Dutch processed cocoa powder which is darker in color with a smoother, more mellow flavor.
How to Make Fudgy Kit Kat Brownies
Find the full printable recipe card below.
Grease and line an 8 inch square pan with parchment paper or foil.
Melt the butter and chocolate together then allow to cool slightly.
Stir in the sugar, salt and lightly beaten eggs then sift in the cocoa powder and flour and mix until well incorporated.
Scrape half the batter into the pan. Chop up and scatter half the kit kat bars over the mixture then cover with the remaining batter and bake for 20 minutes.
Pull the part baked brownies out of oven and lay the rest of the kit kat fingers over the top. Bake for a further 10-15 minutes.
Allow to cool completely then carefully cut into 16 equal pieces.
Why use cocoa powder and real chocolate in brownies?
Cocoa powder is rich and adds a real depth of flavor to any brownie, but it contains very little cocoa butter. So you need to add in real chocolate to get the texture just right. I think the combination of both cocoa powder and real chocolate makes a far better brownie.
How do I make brownies fudgy?
My fudgy Kit Kat brownies have a lovely gooey, soft centre. The trick to a fudgy brownie is first melting the butter and chocolate together and then adding the eggs. This combination gives you fudgy brownies. Cocoa powder on it's own gives a flavorful, but ultimately drier brownie.
Variations of Kit Kat Brownies
- If you want to cut down a little on the chocolate bars, you can leave the Kit Kat biscuits from the top of the brownie, this will cut the amount of Kit Kat you need to use in half.
- I have used milk chocolate Kit Kat Brownies, but you could make a chocolate orange brownie by using choc orange Kit Kats and adding the grated zest of an orange to the brownie batter.
- If you happen to be reading this in Japan I'm jealous! There are apparently more than 200 Japanese Kit Kat flavors - which means you can go to town on the flavor variations!
Tips For Making Kit Kat Stuffed Brownies
- If you like a fudgy centre don't over bake your brownies. When you first pull the brownies out of the oven they may seem under baked but they will continue to set as they cool down.
- All ovens are different so set a timer and keep a close eye on your pan.
- It can be hard to tell when brownies are done. Insert a toothpick into the center of the brownies and if you see raw batter on the stick they need more time. Place them back into the oven for 3 minutes and test again.
- The brownie is done when you can't see any raw batter on the stick. Note - you may see crumbs on the stick when the brownie is fully baked. That's fine - it's the raw batter which means they're under cooked.
- Tempting as it is, let the brownies cool completely in the pan before removing them. They will be much easier to cut when cool.
- When you cut your brownies into 16 squares, use a large carving knife. Size up where to cut the rows by first cutting the whole thing into 4 quarters. This way you’re more likely to cut even pieces.
Can you reheat Kit Kat Brownies?
You can definitely carefully reheat brownies next time to enjoy them warm. Preheat the oven to 350ºC, cover the brownies with foil and bake for around 10-15 minutes until they are warmed through to your liking.
Alternatively you can microwave them by covering one portion loosely and reheating on full power for 20 seconds. Check if it’s warm enough - and keep cooking and checking in 10 second increments if not.
Can you freeze Brownies?
Yes absolutely! Brownies are great for batch baking and can be frozen in an airtight container for up to 3 months. Make sure they are fully defrosted before eating.
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What Do You Think?!
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More Easy Recipe Ideas
Kit Kat Brownies
- 1 stick Unsalted Butter
- ¾ cup Semisweet (Dark) Chocolate Chips
- 1 cup Sugar
- ¼ tsp Sea Salt
- 3 Eggs - At room temperature
- ½ cup Cocoa Powder
- ½ cup All Purpose Flour (Plain Flour)
- 16 2 bar Kit Kats
- Pre heat oven to 350°F or 180°C.
- Grease and line an 8 inch square pan with parchment paper or foil. The easiest way to do this is by cutting two strips of parchment paper which can crisscross each other. This makes it easier for you to lift the brownie out when baked.
- Melt the butter and chocolate together, stirring occasionally, in a large bowl set over a saucepan containing one inch of simmering water. Or use the microwave, cooking on full power for 20 second increments, stirring occasionally until everything is melted.
- Meanwhile cut up half of the kit kat fingers into small pieces.
- Let the chocolate mixture cool slightly off the heat. Stir the sugar, salt and lightly beaten eggs into the melted chocolate.
- Sift in the cocoa powder and flour.
- Mix until well incorporated.
- Pour half of the batter into the prepared pan and level with a palette or cutlery knife.
- Scatter the chopped kit kat pieces over the batter and push them into the mixture gently.
- Pour over the rest of the batter, smooth again and bake for 20 minutes.
- Pull brownies out of oven and lay the rest of the kit kat fingers over the top.
- Bake for a further 10-15 minutes until the edges are starting to crack, the brownies look set, and a toothpick inserted into the center of the pan contains crumbs but no raw batter.
- Remove brownies from oven and cool completely.
- Remove from pan and carefully cut into 16 equal pieces.
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