This 3-ingredient slow cooker vintage rocky road dessert is the kind of easy, nostalgic treat that feels made for busy weekdays, potlucks, and family weekends when you want something special without turning on the oven. Rocky road has been around for generations, and this version leans into that old-fashioned charm with gooey marshmallows, melted chocolate, and crunchy peanuts for a sweet-and-salty dessert that tastes like a retro candy shop favorite.
Serve it in small squares or scoops once set, with coffee, cold milk, or a scoop of vanilla ice cream on the side. If you are bringing it to a gathering, a platter of fresh strawberries or banana slices pairs really well and helps balance the richness, and for the holidays it fits right in on a dessert tray with cookies and bars.
3-Ingredient Slow Cooker Vintage Rocky Road Dessert
Servings: 12
Ingredients
1 bag (10 ounces) fluffy white marshmallows
2 cups semi-sweet chocolate chips
2 cups salted dry-roasted peanuts
Directions
1. Lightly coat the inside of your slow cooker or line a small baking dish or loaf pan with parchment paper so the finished dessert is easy to lift out and slice later.
2. Add the fluffy white marshmallows to the bottom of the slow cooker, then pour the chocolate chips and peanuts evenly over the top.
3. Cover and cook on low for 20 to 30 minutes, just until the chocolate begins to soften. Stir gently to coat the marshmallows and peanuts without completely melting the marshmallows away.
4. Once the mixture is glossy and combined, quickly transfer it to the prepared pan or dish and spread it into an even layer.
5. Let it cool at room temperature for about 20 minutes, then refrigerate for 1 to 2 hours until firm enough to cut into squares. Slice and serve.
Variations & Tips
Use unsalted peanuts: If your family prefers a sweeter bite, swap in unsalted peanuts. You will still get the classic crunch, but the dessert will taste a little more candy-like and less salty.
Try chopped walnuts: For a more old-school dessert tray feel, replace the peanuts with chopped walnuts. The texture is a little softer, and it gives the finished bars a classic vintage candy-shop look.
Do not overcook: The biggest tip with this recipe is to keep a close eye on the slow cooker. You want softened chocolate and lightly coated marshmallows, not a fully melted marshmallow mixture, so check early and stir gently.
Make ahead: This is a great make-ahead dessert for busy weeks. Once fully set, store the squares in an airtight container in the refrigerator for several days, separating layers with parchment so they stay neat.