Mallow Swirl Bars
Indulge in the gooey decadence of Mallow Swirl Bars—an irresistible treat that combines rich, fudgy chocolate with the sweet, pillowy softness of toasted marshmallows. Perfect for satisfying your sweet tooth, these dessert bars feature a buttery cocoa-infused batter speckled with semi-sweet chocolate chips, swirled together with a generous layer of mini marshmallows for a stunning marbled effect. With just 20 minutes of prep time, this easy-to-make recipe is baked to chewy, melty perfection in under 30 minutes. Ideal for parties, potlucks, or a cozy dessert at home, these chocolate-marshmallow bars will quickly become a family favorite.
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Recipe Information
Ingredients
- 115 grams unsalted butter
- 150 grams granulated sugar
- 100 grams light brown sugar
- 2 large eggs
- 2 teaspoons vanilla extract
- 190 grams all-purpose flour
- 30 grams unsweetened cocoa powder
- 1 teaspoon baking powder
- 0.5 teaspoons salt
- 150 grams semi-sweet chocolate chips
- 150 grams mini marshmallows
- 1 teaspoon vegetable oil (for greasing)
Instructions
Preheat your oven to 175°C (350°F) and lightly grease a 9x9-inch baking pan with vegetable oil or line it with parchment paper for easy removal.
In a large microwave-safe bowl, melt the butter in the microwave in 20-second increments until fully melted. Allow it to cool slightly.
Add the granulated sugar and light brown sugar to the melted butter and whisk until the mixture is smooth and creamy.
Whisk in the eggs, one at a time, ensuring each is fully incorporated before adding the next. Stir in the vanilla extract.
In a separate bowl, sift together the flour, cocoa powder, baking powder, and salt. Gradually fold the dry ingredients into the wet mixture using a spatula until just combined. Do not overmix.
Gently fold in the chocolate chips, reserving a small handful for topping.
Spread two-thirds of the batter evenly into the prepared baking pan. Scatter the mini marshmallows over the batter, creating an even layer.
Spoon the remaining batter over the marshmallows in dollops and use a toothpick or knife to create a swirl pattern, ensuring some marshmallows remain visible.
Sprinkle the reserved chocolate chips over the top.
Bake in the preheated oven for 20-25 minutes, or until the edges are set and a toothpick inserted into the center comes out with a few moist crumbs. Avoid overbaking to maintain a gooey texture.
Remove from the oven and cool completely in the pan on a wire rack before slicing into bars.
Serve and enjoy your delicious Mallow Swirl Bars!
Nutrition Facts
Calories |
3937 | ||
|---|---|---|---|
% Daily Value* |
|||
| Total Fat | 159.1 g | 204% | |
| Saturated Fat | 88.8 g | 444% | |
| Polyunsaturated Fat | 0.0 g | ||
| Cholesterol | 627 mg | 209% | |
| Sodium | 1921 mg | 84% | |
| Total Carbohydrate | 642.0 g | 233% | |
| Dietary Fiber | 26.0 g | 93% | |
| Total Sugars | 417.8 g | ||
| Protein | 48.5 g | 97% | |
| Vitamin D | 2.0 mcg | 10% | |
| Calcium | 206 mg | 16% | |
| Iron | 19.5 mg | 108% | |
| Potassium | 965 mg | 21% | |
*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
