Best Sweet Potato Brownies (Fast & Fudgy!)
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If you’ve ever been let down by a dense, flavourless paleo block that someone swore tasted just like a real brownie, this sweet potato brownies recipe is the antidote. Real dark chocolate, real butter, and a 5-minute microwave trick instead of an hour of roasting – the batter is in the oven in 20 minutes and what comes out is super fudgy & delicious. If you love a gooey chocolate dessert, you need to make my chocolate tiffin recipe next!
Recipe Summary: Sweet Potato Brownies
- ✅ Recipe Name: Best Sweet Potato Brownies (Fast & Fudgy!)
- 🕦 Ready in: 45 minutes
- 🤝 Serves: 12
- 🍴 Calories: 257kcal
- 🧑🍳 Main ingredients: sweet potatoes, dark chocolate, dark brown sugar, flour
- ✨ Summary: These sweet potato brownies use real chocolate, real butter, and a 5-minute microwave hack to get a lovely fudgy result in just 45 minutes.
Why you’ll love this recipe
- The chocolate flavour: This sweet potato brownie recipe uses actual dark chocolate & brown sugar rather than nut butter & dates, which means it tastes so much like the real thing and not just like a healthy alternative.
- Easy prep: Microwaving the sweet potatoes instead of roasting them saves about 45 minutes of dead time. For another quick bake after these sweet potato brownies, make sure to try this Soft Flapjack Recipe.
- Make it your own: White chocolate chips, chopped pecans, a drizzle of extra melted chocolate on top… this is a really good base to build on depending on what you’ve got.
If you’ve got leftover sweet potatoes, Easy Roasted Sweet Potato Cubes, Crispy Roasted Sweet Potato Wedges, and Homemade Pan-fried Sweet Potato Gnocchi are great ways to use them up.
Table of Contents
Ingredients for Sweet Potato Brownies
What makes these sweet potato brownies work:
- Sweet potatoes: The mashed flesh adds natural moisture to the brownie crumb without any residual vegetable taste – it just acts as a binder. If you’ve got extras, you should try Crispy Air Fryer Sweet Potato Cubes.
- Dark chocolate and butter: Melting 200g of good quality dark chocolate with real butter is what gives you that fudgy centre and the crinkly top. It’s the combination that makes these taste like actual brownies rather than a healthy brownies alternative.
- Dark brown sugar: The molasses in dark brown sugar pairs really well with the cocoa and gives the edges this slightly chewy caramelised quality. Light brown sugar works fine if that’s what you’ve got, though you’ll lose a bit of that depth.
See the recipe card for full information on all ingredients and quantities.
Variations/ Adaptations
- Make it nutty: Fold 100g of roughly chopped pecans or walnuts into the batter before it goes in the tin for a bit of texture against the soft fudge. You get a similar contrast in my Chewy Banana Bread Cookies.
- Double the chocolate: Scatter a handful of white or milk chocolate chips through the batter just before pouring it into the tin. They melt into little pockets as the sweet potatoes brownies bake and make each slice a bit more interesting.
- Gluten-free: Swap the self-raising flour for a good quality 1:1 gluten-free blend plus a pinch of baking powder and the structure of the sweet potato brownies will still hold up really well. These Chocolate Protein Muffins can easily be made gluten free as well.
How to make Sweet Potato Brownies
Step 1: Microwave the pierced sweet potatoes for 5-6 minutes until tender, then allow them to cool before halving them to scoop out and mash the soft flesh.
Step 2: Melt the butter in a small saucepan over low heat, then add the broken-up chocolate and stir until it is completely melted and smooth.
Step 3: Mix the mashed sweet potato with the brown sugar and eggs, then thoroughly stir in the melted chocolate mixture, flour, and cocoa powder to form the batter.
Step 4: Preheat the oven to 160°C fan, spread the batter evenly into a lined baking tin, and bake for 20-25 minutes until just set before letting it cool to slice.
Craving more chocolate recipes? Try making Easy Chocolate Tiffin, Giant Chocolate Cornflake Cake, or Easy Chocolate Easter Nests.
Tips for the best result
- Once you add the flour, fold it in gently rather than beating. Overmixing tightens the gluten and makes the brownies less tender than they should be when you’re making sweet potato brownies recipe at home.
- Let the sweet potatoes cool down a little before you mix in the eggs, otherwise you risk scrambling them in the warm mash.
- These actually slice better the next day. The fudgy texture firms up overnight in the fridge and you get much cleaner cuts, which is worth knowing if you’re making them for a gathering.
Why This Sweet Potato Brownie Recipe Works (No Veggie Taste)
The first thing people ask when I serve these sweet potato brownies is whether you can taste the sweet potato. You really can’t. The sweet potato is doing one job here, adding moisture. And 200g of dark chocolate alongside dark brown sugar and cocoa powder completely takes over on flavour. There’s no earthiness, no vegetable note, nothing that gives it away.
What separates this from a lot of sweet potato brownie recipes is that it doesn’t try to lean into the health angle by stripping out the actual baking ingredients. Swapping real chocolate for almond butter and dates might look good on paper but it almost always results in something that tastes more like a breakfast bar than a dessert. Using proper metric measurements, real butter, and melted chocolate means the result actually delivers on what a brownie is supposed to be.
Serving Suggestions
These sweet potato brownies are perfect just as they are, but if you love a chocolatey bake on a budget, my simple easy brownies are always worth having in your back pocket if you want a sweet potato-less brownie. They pair beautifully with a splash of cream or a scoop of vanilla ice cream for a quick dessert. If you want to go chocolate-crazy, you could add a layer of chocolate cream cheese frosting to the top for a layered brownie.
If you’re looking for a dinner suggestion, I feel like a delicious spicy protein with a side salad would go well as a dinner pre-brownie. Like my baked boneless chicken thighs , thin sliced chicken breast paired with a rocket salad or air fryer green beans.
Got sweet potato left over from the batch? You’ll love this homemade sweet potato gnocchi for your next dinner. And if you’re always on the hunt for more budget-friendly sweet treats, these chocolate peanut butter rice cakes are a BTB favourite for a very good reason.
Leftover Storage and Reheat Instructions
These brownies with sweet potato actually keep really well and the texture improves after a day in the fridge.
Refrigerator: Store completely cooled brownies in an airtight container in the fridge for up to 3 days. They get denser and fudgier as they chill, which most people prefer.
Freezer: Wrap individual slices in parchment paper, then put them in a freezer-safe bag for up to 3 months.
Reheat: Eat them cold straight from the fridge for a fudge-like bite, or give a slice 10 to 15 seconds in the microwave if you want them warm & gooey.
Sweet Potato Brownie Recipe FAQs
Microwaving is the best method here. Boiling adds too much excess water to the flesh, which makes the batter gummy, and roasting adds around 45 minutes of prep time that you just don’t need.
Self-raising flour gives these an actual brownie texture – cakey on the outside, fudgy in the middle. Nut flours make the whole thing too dense and heavy & you end up with something closer to a solid fudge block than a brownie.
Not at all! The dark chocolate, cocoa powder, and brown sugar are doing all the flavour work. The sweet potato is purely there for moisture and you’d never know it was in there.
That’s completely normal. Brownies made with melted chocolate and sweet potato mash always look a bit soft and underdone when they first come out of the oven. Leave them to cool fully in the tin and they’ll set up into that fudgy, sliceable texture you’re after.
Try savory bakes like Crispy Baked Bacon Pudding (No Steaming Required!), Chicken Pot Pie with Stuffing Crust, or Best Aubergine Parmigiana next.
If you tried this Sweet Potato Brownies recipe, it would mean so much to me if you could leave a review & a star rating to let me know how you found it! I love hearing about your experiences – it motivates me to keep creating more and more recipes for you guys 💛 Let’s get cooking! – Mimi x
The Best Sweet Potato Brownies
Ingredients
- 400 g sweet potatoes
- 200 g dark chocolate
- 100 g butter
- 125 g dark brown sugar
- 2 eggs
- 85 g self-raising flour
- 15 g cocoa powder
Optional:
- 100 g chocolate chips or chopped pecans
Method
- Cook the sweet potatoes: pierce with a knife and microwave for 5–6 minutes until really tender. Allow to cool, then cut in half and scoop the flesh into a mixing bowl. Mash until smooth.
- Heat the oven to 160°C fan, Gas 4 and line a square 20cm brownie tin with baking paper. Leave the chocolate in its wrapper and bash on the worktop until broken up (or chop roughly).
- Melt the butter in a small pan over a low heat, then add the chocolate and stir until melted.
- Add the brown sugar and eggs to the sweet potato, mash until smooth, then mash in the melted chocolate and butter, followed by the flour and cocoa powder. Spread into the baking tin.
- Bake for 20–25 minutes until just set and still a little soft in the middle. Cool in the tin, then remove and cut into pieces.
Notes
- Once you add the flour, fold it in gently rather than beating. Overmixing tightens the gluten and makes the brownies less tender than they should be.
- Let the sweet potatoes cool down a little before you mix in the eggs, otherwise you risk scrambling them in the warm mash.
- These actually slice better the next day. The fudgy texture firms up overnight in the fridge and you get much cleaner cuts, which is worth knowing if you’re making them for a gathering.
Nutrition
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