These Weight Watchers Friendly Chocolate Mint Bars are proof that you can enjoy a rich, festive dessert while still keeping your healthy eating goals in mind. They are fudgy, minty, chocolaty, and perfectly portioned for the holiday season or any time you want a lighter sweet treat.
This recipe was inspired by the November/December issue of Weight Watchers Magazine, where the bars were originally called Chocolaty Candy Cane Triangles. The name is festive, but the flavor is what really makes them memorable: deep chocolate, cool mint, a drizzle of white chocolate, and a little crunch from crushed peppermint candies.

What makes these low fat chocolate mint bars especially interesting is the secret ingredient: black beans. They blend smoothly into the batter, adding a naturally rich color and a dense, brownie-like texture. They also bring a bit of protein and fiber to the recipe without making the bars taste like beans. Once everything is processed until smooth, the beans disappear into the chocolate batter.
Everyone who tried these bars enjoyed them, and no one guessed that black beans were part of the recipe. That is one of the best things about healthier dessert baking: when it is done well, the result still feels like a treat. These bars are a great example of how simple ingredients can create a satisfying dessert with fewer calories than many traditional chocolate holiday bars.

I especially like recipes that use everyday wholesome ingredients to lighten up desserts instead of relying on artificial substitutes. These Weight Watchers chocolate mint bars still include real chocolate, butter, sugar, and peppermint candy, but the balance of ingredients keeps each serving portion-friendly. They are sweet enough to feel special and small enough to fit into a mindful eating plan.
Recipe Notes
These Weight Watchers Chocolate Mint Bars are simple to prepare. The main batter is made in a food processor, which helps the black beans blend completely into the chocolate mixture. For the smoothest texture, scrape down the sides of the bowl several times and keep processing until no bean pieces remain visible.
After the batter is blended, the flour and mini semisweet chocolate chips are pulsed in just until combined. The batter is then spread into an 8-inch square pan and baked until the center is set and a toothpick comes out clean. Once the bars have cooled fully, they are finished with melted white chocolate and crushed peppermint candies.
Cooling is important because the white chocolate topping needs a firm surface. If the bars are still warm, the drizzle may melt too much into the top instead of setting nicely. After the topping hardens, the baked slab is cut into squares and then diagonally into triangles for 32 small servings.

How Many Calories and WW Points in these Low Fat Peppermint Chocolate Bars?
According to the nutritional information provided with the recipe, each chocolate mint triangle has 70 calories. Each serving is small, rich, and satisfying, making these bars a smart choice when you want a chocolate dessert without overdoing it.
3 SmartPoints (Green plan)
3 SmartPoints (Blue plan)
3 SmartPoints (Purple plan)
2 PointsPlus (Old plan)
These low calorie mint chocolate bars are easy enough for everyday baking but festive enough for a holiday dessert tray. The chocolate and peppermint combination makes them especially appealing during the Christmas season, though they are delicious any time you are craving a fudgy chocolate treat.
If you make these Mint Chocolate Bars, please leave a rating and comment below to share how they turned out for you.

WW Low Fat Chocolate Mint Bars Recipe
Equipment
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Silicone spatula
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Food processor
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8-inch baking pan
Ingredients
- 1 can (14 to 15 ounces) black beans, rinsed and drained
- 1/2 cup sugar
- 1/4 cup unsweetened cocoa powder
- 1/4 cup butter, melted
- 3 large eggs
- 1/2 teaspoon salt
- 1/2 teaspoon baking powder
- 1/4 teaspoon vanilla extract
- 1/4 teaspoon mint extract
- 2 tablespoons all-purpose flour
- 1/2 cup mini semisweet chocolate chips
- 3 tablespoons white chocolate chips
- 1 teaspoon vegetable oil, or coconut oil
- 4 peppermint candies, crushed
Instructions
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Preheat the oven to 350F degrees.
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Line an 8-inch square baking pan with non-stick aluminum foil, leaving enough overhang to lift the bars out later.
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Add the black beans, sugar, cocoa powder, melted butter, eggs, salt, baking powder, vanilla extract, and mint extract to the bowl of a food processor. Process on high until the mixture is completely smooth, stopping several times to scrape down the sides of the bowl.
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Add the flour and mini semisweet chocolate chips. Pulse just a few times, until the ingredients are blended into the batter.
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Scrape the batter into the prepared baking pan and spread it into an even layer.
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Bake for 25 to 30 minutes, or until a toothpick inserted into the center comes out clean.
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Remove the pan from the oven and place it on a wire rack. Let the bars cool completely before adding the topping.
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For the topping, combine the white chocolate chips and oil in a small microwave-safe bowl. Microwave on high in short intervals, stirring every 20 to 30 seconds, until smooth and melted. Drizzle the melted white chocolate over the cooled bars and sprinkle with crushed peppermint candies. Let the topping set completely.
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Use the foil overhang to lift the slab from the pan. Cut into 16 squares, then cut each square diagonally to make 32 triangles.
Notes
WW Points: 3
3 SmartPoints (Green plan)
3 SmartPoints (Blue plan)
3 SmartPoints (Purple plan)
2 PointsPlus (Old plan)
For the best texture, process the batter until it is very smooth before adding the flour and chocolate chips.
Let the bars cool fully before drizzling with white chocolate so the topping sets cleanly.
Nutrition
Calories: 70 kcal,
Carbohydrates: 9 g,
Protein: 2 g,
Fat: 3 g,
Fiber: 1 g,
Sugar: 6 g
Nutrition information is automatically calculated and should be used as an approximation.
Additional Info
Source: Weight Watchers Magazine (November/December 2014)
If you like this recipe for WW Chocolate Mint Bars, you might also like:
- Skinny Black Bean Brownies that begin with a box of brownie mix
- No-Bake Peanut Buttery Cookie Dough Bites made with a hidden healthy ingredient
- Chocolate Peanut Butter Squares that are sweet, crunchy, chewy, and chocolaty
- Easy Baked S’mores that are low-calorie and require no campfire