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Fantasy Fudge with Chocolate and Walnuts

Category: Classic Christmas Cookie Recipes & Holiday Baking

Fantasy Fudge is a cooked chocolate-and-marshmallow-creme candy. This version retains the familiar evaporated-milk formula and uses a candy thermometer for the sugar stage. Prepare the pan and measured additions before heating; cooling time comes after active cooking.
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Research and writing by A Pinch Of Lemon
Revised 2026-10-09 · Research-based; not kitchen-tested
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Fantasy Fudge — cut squares hero Pin
Fantasy Fudge — cut squares hero | apinchoflemon.com
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Fantasy Fudge is a recognizable named formula rather than an original invention of this publication. The quantities here correspond to the Kraft Heinz BAKER’S version. The practical focus of this guide is preparation order, thermometer use and diagnosing texture without claiming that every batch has been tested by A Pinch Of Lemon.

Prepare the pan and all additions

Line the 9-inch square pan before turning on the burner, leaving enough overhang to lift the cold slab. Place chocolate, marshmallow creme, walnuts and vanilla within reach in measured portions. Hot sugar does not wait conveniently while a jar is opened or nuts are chopped. Keep children and pets away from the work area and use dry oven mitts when moving the pan.

Use evaporated milk, not sweetened condensed milk. Their names sound similar, but the added sugar and concentration are different. The small can specified here is five ounces, approximately 2/3 cup; a larger can is not one recipe portion. Read the label and measure instead of assuming that “one can” is a universal size.

Understand the sugar-stage endpoint

Fantasy Fudge — single square close
Fantasy Fudge — single square close | apinchoflemon.com
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The manufacturer’s endpoint for this formula is 234°F at the sugar, butter and milk stage. A rolling boil and a clock are useful observations, but different pans and burners reach that point differently. Use a thermometer suitable for candy temperatures, with its sensing area immersed as directed and not touching the hot pan bottom.

Stir continuously during this heated stage, reaching the bottom and corners. If the mixture develops a burned smell or dark scorched flecks, do not try to hide them with extra chocolate. Remove the pan from the burner once the endpoint is reached. This is not a method for unattended boiling or for improvising a much larger batch in the same saucepan.

Stir in chocolate and marshmallow creme

Add the measured chocolate and marshmallow creme after the pan leaves the heat, then stir until distributed. The retained formula uses chopped baking chocolate. Baking chips vary in composition and melting behavior, so a chip substitution should not be described as an identical outcome. Avoid adding unmeasured milk to make stirring easier; that changes the set.

Stir in walnuts and vanilla only after the chocolate mixture is uniform. If omitting nuts, expect fewer solid pieces and a different yield by weight. Do not replace their full volume with liquid flavoring. For a different holiday sweet with a chocolate-setting method, peppermint bark has its own ingredient and handling requirements.

Distribute nuts and transfer once

Fantasy Fudge — slab being cut
Fantasy Fudge — slab being cut | apinchoflemon.com
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Transfer into the lined pan and spread gently to an even thickness. Keep the pan level during cooling. If you change pan size, the candy depth changes even though the amount of candy is the same: a 9-inch square pan has 81 square inches of base, while an 8-inch square has 64, making the same batch about 27% deeper before allowing for corners and lining.

Wait until the slab is fully set and cool before lifting it. A warm soft middle is not enough evidence that the recipe failed. Lift by the liner with support underneath, place on a cutting board, and use a clean sharp knife. Wipe the blade as needed rather than sawing through sticky residue from the previous cut.

Cool before cutting and packing

Plan portions from the cutting pattern. Eight cuts across each direction are not eight pieces total: an eight-by-eight grid yields 64 pieces. A nine-by-nine grid yields 81 smaller pieces. Choose the grid based on how rich a portion you want; no verified per-piece calorie calculation is provided here.

If cooled fudge stays soft, review the milk type, measured amounts and thermometer placement before deciding to cook another batch. If it is dry or crumbly, note whether the sugar stage went past the intended endpoint or the formula changed. A universal reheating rescue is not validated for this recipe, so do not keep adding milk and boiling without a dependable method.

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Pack fully cooled pieces in a covered container, separated with parchment if stacking. Follow ingredient storage instructions and use a cool storage location away from heat; no extended room-temperature shipping life has been established here. For a chilled celebration dessert instead, baked Oreo cheesecake requires a different preparation and refrigeration schedule.

Common Questions About This Recipe

Is sweetened condensed milk interchangeable with evaporated milk?

No. Use the evaporated milk specified in the formula. The products differ in sugar content and are not a direct swap.

What temperature is this formula written for?

The linked manufacturer version uses 234°F for the boiling sugar, butter and evaporated-milk mixture. Check thermometer placement and do not borrow a different recipe’s endpoint.

Does 15 minutes include cooling?

No. Active cooking and preparation are separate from the time the slab needs to cool and set. Do not promise it will be ready to package immediately.

Can I double it in the same saucepan?

Not safely or predictably without checking pan capacity and the changed heating process. Separate batches are easier to manage than an overfilled hot-sugar pan.

How many pieces will I get?

It depends on your cutting grid. An eight-by-eight pattern gives 64 pieces; a nine-by-nine pattern gives 81. These are portion calculations, not a nutrient analysis.

Can a soft batch always be fixed?

No guaranteed rescue is established here. Check complete cooling, ingredient measurements and thermometer use before attempting a separate reliable rework method.

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Fantasy Fudge with Chocolate and Walnuts

Fantasy Fudge is a cooked chocolate-and-marshmallow-creme candy. This version retains the familiar evaporated-milk formula and uses a candy thermometer for the sugar stage. Prepare the pan and measured additions before heating; cooling time comes after active cooking.

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Prep Time
About 10 minutes
Time to Cook
About 15 minutes; use the thermometer
Complete Time
About 25 minutes active, plus cooling
Research and writing: A Pinch Of Lemon

Recipe Type: Christmas

Level of Difficulty: Moderate Difficulty

Cuisine Style: American

Makes: 1-inch squares from a 9-inch square pan

Dietary Categories: Check ingredient labels

Ingredients You’ll Need

01 3 cups granulated sugar
02 3/4 cup butter or margarine
03 1 small can evaporated milk (5 oz, about 2/3 cup)
04 3 packages semi-sweet chocolate, 4 oz each, chopped
05 1 jar marshmallow creme, 7 oz
06 1 cup chopped walnuts
07 1 teaspoon vanilla extract

How to Make It

Step 01

Line a 9-inch square pan with foil or suitable parchment, leaving lifting overhang. Measure the chocolate, marshmallow creme, walnuts and vanilla before heating.

Step 02

Combine sugar, butter and evaporated milk in a roomy saucepan. Heat over medium heat, stirring constantly. When boiling, continue stirring and use a candy thermometer correctly positioned in the mixture; remove from heat at the formula’s 234°F endpoint.

Step 03

Off the heat, add chopped chocolate and marshmallow creme. Stir until evenly melted and combined. Do not add extra milk to loosen the mixture.

Step 04

Stir in walnuts and vanilla, then transfer to the prepared pan and level the surface. Handle carefully: the mixture is very hot.

Step 05

Leave on a stable surface until fully cool and set. Lift with support beneath the slab, cut on a board and pack cooled pieces in a covered container. Preparation and cooking estimates do not include cooling time.

Extra Suggestions

  1. Use evaporated milk, not sweetened condensed milk.
  2. Prepare the pan and measured additions before heating sugar.
  3. Use the formula’s 234°F endpoint with a correctly positioned candy thermometer.
  4. Cooling and setting are additional to active cooking; this version is not kitchen-tested.

Things You'll Need

  • 9-inch square pan
  • Foil
  • 3-quart saucepan
  • Candy thermometer
  • Wooden spoon or heatproof spatula

Allergen Information

Always read labels for allergens and consult your doctor if unsure.
  • Contains milk
  • Contains soy may be present in chocolate
  • Contains tree nuts
  • Contains butter or margarine
  • Contains chocolate
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