Rainbow fudge is a gorgeous fudge made from six colorful layers of white chocolate fudge! It's a little time-consuming because each layer is made individually, but it's not at all difficult since it is made entirely in the microwave. You can always vary the colors of the layers to suit your tastes. Serve this beautiful and eye-catching fudge at your next party, shower, or celebration!
"A wonderful addition to any celebration. The rainbow colors draw instant excitement. And while the layers of colors require chill time in between, it's still easy and worth the trouble to produce something so fun." —Renae Wilson
Line a 9x9 pan with aluminum foil and spray the foil with nonstick cooking spray. A 9x9 pan produces a fudge that is a little over an inch tall. If you want taller fudge, using an 8x8 pan will produce pieces that are almost 2 inches high.
In a bowl, combine 6 ounces (about 1 cup) of white chocolate chips, 1/2 cup sweetened condensed milk, a pinch of salt, and 1/2 teaspoon of vanilla extract. Microwave the bowl for 30 seconds, then stir.
Continue to microwave the white chocolate in 15-second intervals until it is completely melted and smooth when you stir. This can take anywhere from 45 to 90 seconds, depending on the strength of your microwave. Watch it carefully, as white chocolate can easily scorch.
Once melted and smooth, add a few drops of purple gel food coloring and stir until the color is dispersed.
Scrape the fudge into the prepared pan and smooth it into an even layer. It will be very thin, but remember we are making six layers in all!
Chill the pan to set the layer in the freezer for about 10 minutes.
Repeat the process from step 2 again. This time, once your white chocolate is melted, add blue food coloring and stir until combined.
Pour the blue fudge over the purple layer and spread it out, then chill the fudge again.
Continue to repeat this process, adding green, yellow, orange, and red layers of fudge.
Once you have added your final layer, freeze the fudge until it is completely set, about 1 hour.
When you are ready to cut it, remove the fudge from the pan using the foil as handles.
Use a large sharp chef's knife to cut the fudge into small 1-inch pieces. Return the fudge pieces to the freezer and freeze overnight. Keep frozen until ready to serve. The fudge may get soft after a few hours at room temperature.
Tips
If you don't have a microwave, you can melt the chocolate using a double boiler instead. Fill a small saucepan with an inch of two of water and place a heatproof bowl on top of it. The bottom of the bowl should not be touching the water. Bring the water to a gentle simmer and melt the chocolate with the condensed milk, vanilla and salt in the bowl, stirring occasionally.
The rainbow fudge can get soft if kept out at room temperature for too long. It is best served chilled.
How to Store
Rainbow fudge can be stored in an airtight container in the refrigerator for up to a month or in the freezer for up to four months.
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)
How to Make Fudge. The trick to good homemade fudge is to cook the ingredients to the right temperature to form a sugar syrup, and cool the mixture properly so the texture of the fudge turns out smooth and firm, but soft enough to cut. Here's how to make fudge on your stovetop and in your microwave.
If the fudge is very soft and slightly chewy then it is possible that it did not quite cook to soft ball stage and next time the mixture should be cooked to a slightly higher temperature (soft ball is 112-116c/235-240F and a sugar or candy thermometer can help).
If there is too much evaporation, when the cooking time is too long, there will not be enough water left in the fudge and it will be too hard. Conversely, if the cooking time is too brief and there is not enough evaporation, too much water will remain and the fudge will be too soft.
It's important to beat the fudge ingredients to develop the right texture, but you won't get smooth, creamy fudge if you beat it when it's too hot. Beating fudge when it's still over heat creates sugar crystals, aka the grittiness you feel in the fudge.
Evaporated milk doesn't have sugar added. The sweetened condended milk is needed as no extra sugar is added to the fudge. If evaporated milk were used then the fudge would not be sweet enough and also would still be too soft unless the fudge is frozen.
The key to successful, nongrainy fudge is in the cooling, not the cooking. The recipe calls for heating the ingredients to the soft-ball stage, or 234° F, then allowing it to cool undisturbed to approximately 110° F.
Another key part of a successful fudge texture is when you stir the mixture. Stirring the sugar and milk during the initial stages of cooking allows the sugar to dissolve. However, once the mixture comes to a boil, it's time to put the spoon down.
The result is hard and brittle fudge. To save the fudge, put it in a saucepan with 45 to 60 ml (3 or 4 tbsp.) of 35% cream and bring to a boil, stirring until the sugar is completely melted. Then let it boil without stirring until the thermometer reaches 114 to 115 °C (237 to 239 °F).
If the sugar crystals are not properly dissolved before cooling, they can create a gritty texture. To avoid this, ensure that you stir the fudge mixture consistently and remove any sugar crystals that form on the sides of the pan using a wet pastry brush.
If your fudge is tough, hard, or grainy, then you may have made one of several mistakes: You may have overcooked it, beaten it too long, or neglected to cool it to the proper temperature.
While they have similar consistencies and flavor there is one notable difference between creme and fluff. Creme contains cream of tartar while fluff does not, making it ideal for use in fudge. What is a substitute for marshmallow cream? You can make marshmallow cream by melting down marshmallows with corn syrup.
Pop the grainy fudge back into the pan along with some water and a little cream and melt the fudge back down to a liquid and re-boil it to temperature. Heat slowly to begin with and make sure the mixture goes completely smooth before bringing it to the boil.
Cut the fudge into small pieces around one inch and put it on the plate and place each fudge with the distance in between. Keep a bowl of water inside the microwave along with the fudge to create moisture for the pieces to inhale. Next, microwave the fudge pieces for just 10 seconds.
You have to control two temperatures to make successful fudge: the cooking temperature AND the temperature at which the mixture cools before stirring to make it crystallize. Confectionery experiments have shown that the ideal cooking temperature for fudge is around 114 to 115 °C (237 to 239 °F).
Cream of tartar is used in caramel sauces and fudge to help prevent the sugar from crystallizing while cooking. It also prevents cooling sugars from forming brittle crystals, this is why it's the secret ingredient in snickerdoodles!
OPTION 2) Freeze it overnight. Cut it into squares. Cover each square thickly in melted chocolate, ensuring no part of the fudge is exposed. Cross your fingers and hope that the chocolate sets firmly before the fudge starts to thaw, and later impress your friends as you present them with your soft-centred chocolates.
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