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Creamy root beer float fudge with a rich root beer layer and vanilla swirl, sliced into squares on parchment paper.
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🍬 Root Beer Float Fudge

Creamy, nostalgic root beer float fudge made with a rich root beer base and a smooth vanilla “float” layer. This easy stovetop fudge has bold root beer flavor, a soft melt-in-your-mouth texture, and beautiful layered presentation—perfect for gifting or parties.
Course Candy, Dessert, Holiday Sweets, No-Bake Treats
Cuisine American, Retro / Soda Shop Inspired
Keyword candy recipes, creamy vanilla fudge, easy no bake fudge, holiday fudge, homemade fudge, marshmallow creme fudge, nostalgic desserts, old fashioned fudge, party treats, retro dessert ideas, root beer dessert recipe, root beer float fudge, root beer fudge recipe, soda shop desserts, white chocolate fudge
Prep Time 15 minutes
Cook Time 10 minutes
Chill Time 4 hours
Total Time 4 hours 25 minutes
Servings 36 small squares
Calories 160kcal
Cost $8 per pan

Equipment

  • 8Ă—8 inch baking pan
  • Parchment paper
  • Medium saucepan
  • Mixing bowls
  • Heat-resistant spatula
  • Whisk
  • Measuring cups and spoons
  • Microwave-safe bowl (for vanilla layer)
  • Rubber scraper or offset spatula (to smooth layers)
  • Knife for slicing

Ingredients

Root Beer Layer

  • 2 cups granulated sugar
  • ½ cup heavy cream
  • ½ cup unsalted butter
  • ÂĽ cup root beer measured liquid, not foam
  • 1 tbsp light corn syrup optional
  • 1 7 oz jar marshmallow crème
  • 10 oz about 1â…” cups white chocolate chips (not candy melts)
  • 2–2½ tsp root beer extract
  • ½ tsp vanilla extract
  • ÂĽ tsp salt
  • Optional: brown food coloring

Vanilla “Float” Layer

  • 7.5 oz about 1ÂĽ cups white chocolate chips (not candy melts)
  • â…“ cup + 1 tsp sweetened condensed milk
  • 1 tsp vanilla extract
  • pinch–¼ tsp salt

Instructions

Prepare Pan

  • Line an 8Ă—8-inch pan with parchment paper, leaving overhang. Lightly grease.

Make Vanilla Layer

  • In a microwave-safe bowl, combine white chocolate chips and sweetened condensed milk.
  • Microwave in 20-second intervals, stirring between each, until smooth and glossy with no visible chips.
  • Stir in vanilla extract and salt. Set aside. If thickened, microwave 10 seconds before using.

Melt Root Beer Base

  • In a medium saucepan, combine sugar, heavy cream, butter, root beer, and corn syrup (if using).
  • Heat over medium, stirring until fully smooth.

Boil

  • Bring to a full rolling boil (large bubbles across entire surface).
  • Cook to 236–238°F.
  • Do not exceed 238°F or fudge may become crumbly.
  • If no thermometer, boil about 4 minutes after full boil begins.
  • Cold water test: forms a soft ball that flattens easily.

Cool Slightly

  • Remove from heat and let sit about 1 minute until bubbling calms.

Finish Fudge

  • Stir in marshmallow crème until melted.
  • Add white chocolate chips in 2 additions, stirring gently until smooth and glossy with no visible chips.
  • Stop stirring once smooth.
  • Stir in root beer extract, vanilla extract, salt, and optional coloring.

Pour Base Layer

  • Pour mixture into prepared pan.
  • Do not scrape crystallized sugar from sides of saucepan.

Let Set Slightly

  • Let sit 3–5 minutes until surface looks slightly matte and leaves a soft fingerprint.

Add Vanilla Layer

  • Pour vanilla mixture on top and spread gently.
  • Optional: lightly swirl.

Chill

  • Refrigerate 4–6 hours or until fully set.

Slice

  • Let sit at room temperature 10–15 minutes.
  • Cut with a warm knife, wiping between cuts.

Notes

  • For best results, use white chocolate chips (not candy melts) to achieve a smooth, creamy fudge texture and proper set.
  • Cook the sugar mixture to 236–238°F (soft-ball stage) for perfectly firm yet creamy fudge. Do not exceed 238°F or the fudge may become dry or crumbly.
  • If you don’t have a thermometer, use the cold water test: a small drop should form a soft ball that flattens easily when pressed.
  • The root beer adds subtle background flavor, while root beer extract provides the main flavor, so don’t skip it.
  • Avoid scraping crystallized sugar from the sides of the saucepan when pouring, as this can cause grainy fudge.
  • Let the base layer cool slightly before adding the top layer to ensure clean layers that stick together without blending.
  • If the vanilla layer thickens before spreading, microwave it briefly (about 10 seconds) until smooth and spreadable again.
  • For clean, bakery-style slices, cut the fudge with a warm knife and wipe between cuts.
  • Store fudge in an airtight container in the refrigerator for the best texture and freshness.
  • This root beer float fudge recipe is perfect for holidays, gifting, parties, or nostalgic dessert lovers.