Rich, ultra-creamy, and completely foolproof—this 10-minute microwave chocolate fudge with toasted walnuts delivers old-fashioned candy-shop texture without ever touching a candy thermometer or standing over a hot stove. Sweetened condensed milk, semi-sweet chocolate chips, butter, and pure vanilla melt together in one microwave-safe bowl in just 3 minutes before folding in crunchy California walnuts.
Whether you prefer yours loaded with toasted walnuts, topped with flaky sea salt, or swirled with marshmallow creme, one 8×8-inch pan yields 36 velvety squares ready to slice and gift.
Why This 10-Minute Microwave Chocolate Fudge Is Foolproof
- Zero sugar crystals or graininess: Sweetened condensed milk replaces boiled granulated sugar so the fudge sets silky-smooth every single time.
- One bowl, 3 minutes of heating: Gentle 60-second microwave intervals melt the chocolate and butter without scorching.
- Toasted walnut crunch: Lightly toasting the chopped walnuts for 5 minutes brings out warm, buttery nuttiness that cuts the rich chocolate.
- Slices into neat candy-shop squares: A parchment-paper sling lets you lift the entire chilled block onto a cutting board for clean cuts.
Ingredients for Classic Microwave Chocolate Fudge
Just five pantry staples create 36 squares of rich holiday fudge:
- 3 cups (18 oz) semi-sweet chocolate chips: Use a trusted brand like Ghirardelli, Guittard, or Toll House for smooth melting and deep cocoa flavor.
- 1 can (14 oz) sweetened condensed milk (NOT evaporated milk): Check the can label carefully—sweetened condensed milk is thick and sweet, which makes the fudge set firm.
- 4 tbsp (1/2 stick) unsalted butter, cut into pieces: Adds velvety gloss and melt-in-your-mouth richness.
- 1 1/2 tsp pure vanilla extract + 1/4 tsp kosher salt: Enhances the chocolate and balances the sweetness.
- 1 cup chopped toasted walnuts (or pecans): Folded into the fudge and pressed across the top.
How to Make Microwave Chocolate Walnut Fudge Step by Step
Follow these easy steps for creamy, sliceable fudge in 10 minutes:
- Line an 8×8-Inch Pan: Line an 8×8-inch square baking pan with two overlapping sheets of parchment paper (or foil), leaving a 2-inch overhang on all sides for easy lifting.
- Combine Chocolate, Condensed Milk & Butter: In a large microwave-safe glass bowl, combine the 3 cups semi-sweet chocolate chips, 14-ounce can of sweetened condensed milk, butter pieces, and kosher salt.
- Microwave in Short Bursts: Microwave on HIGH for 60 seconds, remove, and stir well. Microwave for another 30 to 45 seconds and stir vigorously with a sturdy silicone spatula until the residual heat melts every last chocolate chip into a thick, glossy ribbon.
- Fold In Vanilla & Walnuts, Then Chill: Stir in the pure vanilla extract and 3/4 cup of the chopped toasted walnuts. Scrape immediately into the prepared 8×8 pan, smooth the top, press the remaining 1/4 cup walnuts (and a pinch of flaky sea salt) over the surface, and refrigerate for 2 hours until firm before slicing into 36 squares!
Fudge Variations & Holiday Sweet Box Ideas
Packing holiday gift boxes for friends, teachers, and coworkers? Tuck squares of this walnut fudge alongside our cute Christmas cake pops and reindeer Oreo balls, or serve them next to our Little Debbie Christmas tree cake dip on your dessert buffet.
- Nut-free option: Simply omit the walnuts and top with crushed peppermint candy canes or holiday sprinkles!
- Dark chocolate lover’s swap: Replace 1 cup of the semi-sweet chips with 60% bittersweet chocolate chips for an extra-rich truffle fudge.
Frequently Asked Questions
Why didn’t my microwave fudge set firm?
The #1 culprit is accidentally grabbing a can of unsweetened evaporated milk instead of thick sweetened condensed milk, or using less than a full 18 ounces (3 cups) of chocolate chips per 14-ounce can.
How do I cut neat, bakery-clean fudge squares?
Lift the chilled fudge block out using the parchment sling, run a long sharp chef’s knife under hot tap water, wipe it dry with a towel between every cut, and press straight down.
Classic 10-Minute Microwave Chocolate Walnut Fudge
Velvety, old-fashioned chocolate walnut fudge made in one bowl in the microwave in 10 minutes with chocolate chips, sweetened condensed milk, butter, and toasted walnuts.
Equipment
- 8×8-inch square baking pan
- Parchment paper
- Large microwave-safe glass bowl
- Silicone spatula
Ingredients
Instructions
- 1Line an 8×8-inch square pan with parchment paper, leaving a 2-inch overhang on two sides for easy removal.
- 2In a large microwave-safe bowl, combine the 3 cups semi-sweet chocolate chips, sweetened condensed milk, cubed butter, and kosher salt.
- 3Microwave on HIGH for 60 seconds, then stir thoroughly. Microwave for an additional 30 to 45 seconds and stir vigorously until completely melted, smooth, and glossy.
- 4Stir in the pure vanilla extract and 3/4 cup of the chopped toasted walnuts.
- 5Spread the warm fudge evenly into the lined 8×8-inch pan and press the remaining 1/4 cup chopped walnuts gently into the top.
- 6Refrigerate uncovered for 2 hours until firm. Lift out using the parchment overhang and slice with a warm, wiped chef’s knife into 36 squares.
Notes
- Do Not Overheat: Stop microwaving when about 80% of the chips are melted—stirring in the warm bowl melts the remaining chips smoothly without scorching.
- Storage & Freezing: Store in an airtight container in the refrigerator for up to 3 weeks or freeze wrapped in parchment and foil for up to 3 months.
Nutrition information is automatically calculated, so should only be used as an approximation.
Additional Info
Course: Dessert / Candy
Cuisine: American
Servings: 36
Keyword: microwave chocolate fudge, easy chocolate walnut fudge, 10 minute microwave fudge, condensed milk fudge
