Rich & Creamy Purple Sweet Potato Vegan Nanaimo Bars

Oh, friends, get ready to dive into a world of vibrant color and incredible flavor with these Rich & Creamy Purple Sweet Potato Vegan Nanaimo Bars! Imagine layers of rich cocoa, a silky-smooth purple sweet potato custard, and a decadent chocolate ganache all coming together in a no-bake wonder. These bars offer a magical combination of textures and tastes, a delightful twist on a classic.

I remember countless afternoons in my grandmother’s kitchen, watching her whip up treats that always felt like pure love. That same spirit of creating something special from simple ingredients fuels my baking today, especially when I’m experimenting with new flavors like these.

This recipe proves that indulgent, comforting desserts can also be wonderfully approachable and kind to everyone’s dietary needs. Perfect for gatherings or a quiet treat, it’s a showstopper that requires no oven time. My top tip? Always have your ingredients prepped and ready for a smooth baking journey!

What You Need to Make This Recipe

To craft these Purple Sweet Potato Vegan Nanaimo Bars, simple stars like vegan graham cracker crumbs, vibrant purple sweet potato puree, and rich vegan chocolate chips come together. I always ensure my vegan butter is perfectly softened for smooth results. Find the complete list in the recipe card below!

How to Make Purple Sweet Potato Vegan Nanaimo Bars

Making these delightful Purple Sweet Potato Vegan Nanaimo Bars is a joyful journey! First, you’ll press down a rich chocolatey coconut base. Next, spread a vibrant, creamy purple sweet potato custard layer. Finally, top it all with a luscious chocolate ganache. A little chill time, and pure magic awaits! It’s an easy, rewarding, no-bake experience.

A close-up of two stacked Ube Nanaimo Bars, showing their distinct layers of coconut crust, custard, purple ube, and chocolate.

Purple Sweet Potato Vegan Nanaimo Bars

Indulge in these vibrant, three-layered Purple Sweet Potato Vegan Nanaimo Bars! Featuring a rich cocoa-coconut base, a creamy purple sweet potato custard, and a decadent chocolate topping, these bars are a delightful vegan twist on a classic Canadian treat.
Prep Time 45 minutes
Total Time 2 hours 45 minutes
Servings: 16 bars
Course: Dessert
Cuisine: Canadian, Dessert, Vegan
Calories: 350

Ingredients
  

For the Base Layer
  • 1 1/2 cups vegan graham cracker crumbs
  • 1 cup shredded unsweetened coconut
  • 1/2 cup unsweetened cocoa powder
  • 1/4 cup granulated sugar
  • 1/2 cup vegan butter melted
For the Purple Sweet Potato Custard Layer
  • 1 cup purple sweet potato puree from about 1 large sweet potato, steamed or roasted until very soft, then mashed
  • 1/2 cup vegan butter softened
  • 3 cups powdered sugar sifted
  • 1/4 cup unsweetened plant-based milk e.g., almond, soy
  • 1 tsp vanilla extract
For the Chocolate Topping
  • 1 cup vegan chocolate chips
  • 2 tbsp vegan butter or coconut oil

Equipment

  • 9×13 inch baking pan
  • Parchment Paper
  • Large mixing bowls
  • Medium saucepan (or microwave-safe bowl)
  • Electric mixer (handheld or stand)
  • Spatula
  • Measuring cups and spoons
  • Sharp Knife

Method
 

Prepare the Base Layer
  1. Line a 9×13 inch baking pan with parchment paper, leaving an overhang on the sides for easy lifting.
  2. In a large mixing bowl, combine the vegan graham cracker crumbs, shredded coconut, cocoa powder, and granulated sugar. Mix well.
  3. Pour in the melted vegan butter and mix until all dry ingredients are thoroughly moistened.
  4. Press the mixture evenly and firmly into the bottom of the prepared pan. Use the back of a spoon or a flat-bottomed glass to ensure it’s compact.
  5. Refrigerate for at least 30 minutes to firm up the base.
Make the Purple Sweet Potato Custard Layer
  1. In a large bowl, using an electric mixer or a sturdy whisk, cream together the softened vegan butter and purple sweet potato puree until smooth and well combined.
  2. Gradually add the sifted powdered sugar, 1 cup at a time, beating on low speed until fully incorporated.
  3. Add the plant-based milk and vanilla extract. Increase speed to medium and beat for 2-3 minutes until the mixture is light, fluffy, and smooth.
  4. Spread the purple sweet potato custard evenly over the chilled base layer.
  5. Return the pan to the refrigerator and chill for at least 60 minutes, or until the custard layer is firm.
Create the Chocolate Topping
  1. In a medium, microwave-safe bowl or a small saucepan over low heat, combine the vegan chocolate chips and vegan butter (or coconut oil).
  2. Melt the mixture, stirring frequently, until completely smooth and glossy. If microwaving, heat in 30-second intervals, stirring in between, until melted.
  3. Once the custard layer is firm, pour the melted chocolate topping evenly over it, spreading quickly with a spatula to cover the entire surface.
  4. Return the pan to the refrigerator for another 30-60 minutes, or until the chocolate topping is fully set.
Finish and Serve
  1. Once completely chilled and firm, use the parchment paper overhang to carefully lift the entire slab out of the pan and onto a cutting board.
  2. Using a sharp knife dipped in hot water and wiped clean after each cut (to prevent cracking the chocolate), cut the slab into 16 or 24 bars.
  3. Store Purple Sweet Potato Vegan Nanaimo Bars in an airtight container in the refrigerator.

Notes

To make purple sweet potato puree: Steam or roast 1 large purple sweet potato until very tender (about 30-45 minutes). Let it cool slightly, peel, and mash until completely smooth. You might need to add a tiny splash of plant milk if it’s too dry.
Ensure all layers are sufficiently chilled before adding the next one for clean layers and easy cutting.
These bars are best stored in the refrigerator and can last for up to 5-7 days.
For an extra touch, sprinkle a pinch of flaky sea salt on the chocolate topping before it sets.

Pro Tips for Making This Purple Sweet Potato Vegan Nanaimo Bars

To ensure your Purple Sweet Potato Vegan Nanaimo Bars turn out perfectly, I’ve gathered my favorite tricks over the years.


  • My Secret Trick: I always press the base layer firmly into the pan using the bottom of a glass or a flat measuring cup. This creates a solid foundation, preventing crumbly bars when you slice them!



  • When making the purple sweet potato custard layer, make sure your purple sweet potato puree is completely smooth. I love using a food processor for this, ensuring no lumps interrupt that gorgeous, silky texture.



  • For a perfectly smooth chocolate topping, I always melt my vegan chocolate chips with vegan butter or coconut oil over a double boiler, or in short bursts in the microwave, stirring until utterly glossy. Patience here pays off!



  • Allow ample chilling time between each layer. I find that at least 30 minutes in the fridge for the base, and an hour for the custard, helps each layer set beautifully for clean, crisp slices.


Fun Variations for Purple Sweet Potato Vegan Nanaimo Bars

I truly believe that baking should be a canvas for creativity! These Purple Sweet Potato Vegan Nanaimo Bars are wonderfully adaptable.

Flavor Twists

  • Citrus Zest: For a brighter flavor, I sometimes add a teaspoon of orange or lemon zest to the purple sweet potato custard layer. My friend Sarah always says it makes them taste like sunshine!
  • Spice it Up: A pinch of cinnamon or nutmeg in the base layer or custard can add a lovely warmth, especially during cooler months. It reminds me of spiced pumpkin pie.

Topping Adventures

  • Nutty Crunch: Sprinkle a few toasted chopped pecans or walnuts over the chocolate topping before it sets for an added texture and nutty flavor. My brother loves this!
  • White Chocolate Swirl: Drizzle melted vegan white chocolate over the dark chocolate topping and swirl gently with a toothpick for a beautiful marbled effect. It looks so fancy, but it’s super easy!

What to Serve With Purple Sweet Potato Vegan Nanaimo Bars

These Purple Sweet Potato Vegan Nanaimo Bars are a treat all on their own, but a few simple accompaniments can truly elevate the experience!

  • A Warm Beverage: There’s nothing quite like a cup of freshly brewed coffee, herbal tea, or my favorite, a rich hot cocoa, to enjoy alongside these bars. The warmth beautifully contrasts the cool, creamy dessert.
  • Fresh Berries: A scattering of fresh raspberries, blueberries, or sliced strawberries adds a burst of vibrant color and a touch of tartness that perfectly complements the sweetness of the bars. It’s how my grandma always served her richer desserts!
  • Vegan Vanilla Ice Cream: A small scoop of good quality vegan vanilla bean ice cream is a dreamy pairing, especially if you’re looking for a little extra indulgence. The melting ice cream around the chilled bar is pure bliss.

How to Store Purple Sweet Potato Vegan Nanaimo Bars

Keeping your delicious Purple Sweet Potato Vegan Nanaimo Bars fresh is key to enjoying every last crumb!

Fridge Storage

Store any leftover bars in an airtight container in the refrigerator for up to 5-7 days. I always place parchment paper between layers if stacking to prevent them from sticking together. They are best enjoyed chilled straight from the fridge!

Freezer Friendly

These bars freeze beautifully! Wrap individual slices tightly in plastic wrap, then place them in a freezer-safe bag or container. They’ll keep for up to 1-2 months. When ready to enjoy, simply thaw them in the refrigerator for a few hours before serving. I find that a light dusting of cocoa powder after thawing can make them look extra special, just like freshly made!

Nutritional Benefits

Our Purple Sweet Potato Vegan Nanaimo Bars are a delightful treat with a secret! Purple sweet potatoes provide antioxidants and fiber, making this dessert satisfying and a little nourishing. It’s my way of showing that indulgence can still incorporate wholesome ingredients for a balanced sweet moment.

FAQs

Faq 1

Can I use regular sweet potatoes instead of purple?
Absolutely! While Purple Sweet Potato Vegan Nanaimo Bars get their vibrant hue from the purple variety, you can use orange sweet potato puree. The color will be different, but the delicious creamy texture and flavor will still shine through beautifully.

Faq 2

How can I make the base gluten-free?
For a gluten-free version of these delightful Purple Sweet Potato Vegan Nanaimo Bars, simply swap out the regular vegan graham cracker crumbs for a gluten-free alternative. Many brands offer delicious gluten-free graham crackers that work perfectly in this recipe!

Faq 3

Do these bars need to be refrigerated?
Yes, due to the creamy custard layer, these Purple Sweet Potato Vegan Nanaimo Bars must be stored in the refrigerator. This keeps them firm, fresh, and safe to eat, ensuring every bite is as wonderful as the first.

Faq 4

Can I make these ahead for a party?
Definitely! Purple Sweet Potato Vegan Nanaimo Bars are perfect for making ahead. You can prepare them a day or two in advance and store them in the fridge. This allows the flavors to meld beautifully and saves you time on the day of your event.

Conclusion

And there you have it, sweet friends! These Purple Sweet Potato Vegan Nanaimo Bars are more than just a dessert; they’re an invitation to bring joy, color, and homemade warmth into your kitchen. Whether you’re sharing them with loved ones or savoring a quiet moment, I hope they inspire you to embrace the simple magic of baking. With a little love, patience, and these delightful bars, you’re not just making a treat – you’re creating sweet memories. Happy baking!

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