White chocolate rainbow fudge is a bright, creamy candy that you can stir together in one saucepan with only three main ingredients.
Sweetened condensed milk melts with white chocolate chips into a smooth base, and chopped chewy fruit candies get folded in so every square is dotted with color. There is no candy thermometer and no boiling sugar syrup to watch, just melt, stir, pour, and chill.
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Why This White Chocolate Rainbow Fudge Recipe Works
Sweetened condensed milk does the work that a sugar syrup would do in old fashioned fudge. It already contains cooked down milk and sugar, so the fudge sets up creamy and sliceable without a thermometer.
White chocolate scorches easily, but chips melt gently and evenly when you keep the heat low and stir without stopping. That keeps the mixture glossy and smooth instead of grainy.
The chewy fruit candies stay intact because they are stirred in after the pan comes off the heat, so they keep their color and their bite. A few drops of gel food coloring swirled on top make the finished slab look like a rainbow.
Ingredients for White Chocolate Rainbow Fudge
- 3 cups white chocolate chips
- 1 can (14 oz) sweetened condensed milk
- 3/4 cup chewy fruit candies, chopped
- gel food coloring in 2 to 3 colors (optional)
White chocolate chips: Choose chips labeled white chocolate or white baking chips. They melt evenly and are easier to work with than a chopped bar.
Sweetened condensed milk: Use sweetened condensed milk, not evaporated milk. The thick, sweet milk is what gives the fudge its soft, sliceable texture.
Chewy fruit candies: Any colorful chewy fruit candy works. Chopping them into halves or quarters makes them easier to fold in and easier to slice through.
Gel food coloring: Gel colors are concentrated, so one drop in each corner is enough. Liquid coloring can thin the fudge.
Parchment paper: Not an ingredient, but lining the pan with parchment gives you handles to lift the whole slab out for clean cutting.
How to Make White Chocolate Rainbow Fudge
1. Line the pan. Line an 8 inch square pan with parchment paper, leaving a little overhang on two sides to use as handles. Chop the candies and set them nearby.
2. Combine the base. Add the white chocolate chips and sweetened condensed milk to a medium saucepan.
3. Melt slowly. Warm over low heat, stirring constantly with a rubber spatula for 3 to 5 minutes, until the mixture is completely smooth and no chips remain.
4. Cool briefly. Remove from the heat and let the fudge cool for about 2 minutes so the hot mixture does not melt the candy colors.
5. Fold in the candies. Stir in the chopped fruit candies until evenly distributed, working quickly because the fudge begins to thicken.
6. Fill the pan. Scrape the fudge into the pan and press it into an even layer with the back of a spoon or an offset spatula.
7. Add the swirls. If using food coloring, place a drop of each color in different spots, then drag a toothpick through the colors to make loose swirls.
8. Chill until firm. Refrigerate for at least 2 hours, until the fudge is firm and holds a clean edge when cut.
9. Cut and serve. Lift the slab out by the parchment, then slice into 36 small squares with a sharp knife wiped clean between cuts.
How to Serve White Chocolate Rainbow Fudge
Arrange the squares on a colorful plate for birthday parties, baby showers, or seasonal cookie trays. They pair nicely with a rich dessert like fudgy chocolate chunk brownies or a plate of madeleine cookies for a mixed dessert board. For a bigger sweet table, add a few coconut chocolate chip cookies and a slice of peanut butter candy bar cheesecake. Because the fudge is very sweet, keep the squares small and serve them with cold milk or black coffee.
How to Store and Reheat White Chocolate Rainbow Fudge
Store the squares in an airtight container in the refrigerator for up to 1 week, with parchment paper between the layers. For longer storage, wrap them well and freeze for up to 2 months, then thaw in the refrigerator before serving. Let refrigerated pieces sit at room temperature for about 10 minutes for the ideal texture.
Tips and Variations for White Chocolate Rainbow Fudge
Keep the heat low. White chocolate scorches easily, so stir constantly and pull the pan off the burner as soon as the mixture is smooth.
Chop the candies. Smaller pieces are easier to bite and to cut through, and they spread more evenly through the pan.
Cool before mixing. Fold in the candies after a short rest so the colors stay bright instead of bleeding into the base.
Use a sharp knife. Dip it in hot water and wipe it dry between cuts for neat, clean edges.
Press gently. A light press leaves the surface smooth without crushing the candies.
Change the theme. Swap in colored sprinkles or crushed seasonal candies to match the season.
Add a pinch of salt. A tiny pinch of flaky salt on top balances the sweetness.
Keep it chilled. Because the fudge contains dairy, store it cold, and for general guidance on storing prepared foods, see this Purdue Extension article on storing leftovers.
Frequently Asked Questions About White Chocolate Rainbow Fudge
Why Did My White Chocolate Rainbow Fudge Turn Grainy?
Overheating is the usual cause. Keep the heat low, stir constantly, and remove the pan as soon as everything is smooth.
Can I Make White Chocolate Rainbow Fudge in the Microwave?
Yes. Heat the chips and milk in a microwave safe bowl in 30 second pops, stirring after each, until smooth. Then follow the same steps.
How Long Does White Chocolate Rainbow Fudge Need to Set?
Plan on at least 2 hours in the refrigerator. For a faster set, use the freezer for about 45 minutes, then move it to the refrigerator.
Can I use other candies?
Yes. Chopped chewy candies, mini marshmallows, or sprinkles all work. Avoid anything very moist, which can make the fudge sticky.
Can I double the batch?
Yes. Use a 9×13 inch pan and allow a little longer on low heat to melt everything while you stir.
White Chocolate Rainbow Fudge
Equipment
- Medium saucepan
- Rubber spatula
- 8 inch square pan
- Parchment paper
- Sharp knife
Ingredients
Main Ingredients
- 3 cup white chocolate chips
- 14 oz sweetened condensed milk 1 can
- ¾ cup chewy fruit candies chopped
- 1 gel food coloring optional, 2 to 3 colors
Instructions
Cooking
- Prep the pan. Line an 8 inch square pan with parchment paper and chop the candies.
- Melt. Stir the chips and sweetened condensed milk in a saucepan over low heat for 3 to 5 minutes until smooth.
- Mix. Take the pan off the heat, rest 2 minutes, then fold in the candies.
- Fill. Spread the fudge in the pan, add drops of food coloring, and swirl with a toothpick.
- Chill. Refrigerate for 2 hours until firm.
- Cut. Lift out the slab and slice into 36 squares.
