Mackinac Island Fudge isn’t just a dessert—it’s a slice of sweet American history. Born in the quaint, car-free charm of Mackinac Island in Michigan, this legendary treat is known for its rich, velvety texture and melt-in-your-mouth decadence. Tourists flock from all over the country to watch it being made in traditional fudge shops, where the air is thick with the scent of chocolate and butter. It’s more than just a treat—it’s an experience.

This version captures the spirit of the island with a creamy, chocolate-forward bite balanced by crunchy bits of walnut and bursts of sweetness from chocolate chips. It’s smooth, nostalgic, and indulgent, perfect for gift-giving, holiday platters, or an afternoon coffee pairing. If you’ve ever craved a classic fudge that’s as rich in flavor as it is in tradition, this recipe brings Mackinac Island magic right to your kitchen.
Ingredients for Mackinac Island Fudge
- 3 cups semisweet chocolate chips
- 1 can (14 oz) sweetened condensed milk
- ½ cup unsalted butter
- 1 teaspoon vanilla extract
- 1 cup chopped walnuts (optional but traditional)
- ½ teaspoon salt
- Extra chocolate chips for topping (optional)

Step 1: Prepare Your Pan
Line an 8×8-inch baking dish with parchment paper or foil, leaving a bit of overhang on the sides for easy lifting. Lightly grease the surface with butter or non-stick spray to prevent sticking.
Step 2: Melt the Base
In a medium saucepan over low heat, combine the semisweet chocolate chips, sweetened condensed milk, and butter. Stir constantly with a rubber spatula or wooden spoon until the mixture is completely melted and silky smooth. Be careful not to overheat it—low and slow is key to perfect texture.
Step 3: Flavor It Up
Once melted, remove from heat and stir in the vanilla extract and salt. This adds depth and balance to the richness of the fudge. At this point, fold in the chopped walnuts for that iconic Mackinac crunch.
Step 4: Pour and Smooth
Quickly pour the fudge mixture into the prepared pan. Use a spatula to spread it evenly into all corners. For a classic touch, sprinkle a handful of chocolate chips over the top while it’s still warm—they’ll gently melt into the surface, creating a glossy finish.
Step 5: Chill Until Set
Transfer the pan to the refrigerator and let it chill for at least 3 hours, or until completely firm. For best results, refrigerate overnight.
Step 6: Slice and Serve
Lift the fudge out using the parchment or foil overhang. Place on a cutting board and use a sharp knife to cut into bite-sized squares. Wipe the blade between cuts for clean edges.
Storage Instructions
To keep your Mackinac Island Fudge fresh and delicious:
- Room Temperature: Store in an airtight container at room temperature for up to 7 days. Keep it in a cool, dry place away from direct sunlight.
- Refrigerator: For extended freshness, especially in warmer climates, store the fudge in the fridge. It will last up to 2–3 weeks. Let it come to room temperature before serving for the best texture.
- Freezer: Fudge freezes beautifully! Wrap individual squares in plastic wrap and place them in a freezer-safe zip bag or container. Freeze for up to 3 months. Thaw in the refrigerator or at room temperature.
Estimated Nutrition (per 1 square, assuming 25 pieces)
- Calories: 180
- Total Fat: 10g
- Saturated Fat: 6g
- Cholesterol: 15mg
- Sodium: 50mg
- Total Carbohydrates: 22g
- Dietary Fiber: 1g
- Sugars: 20g
- Protein: 2g
Frequently Asked Questions
1. Can I make this fudge without nuts?
Absolutely! Just skip the walnuts if you prefer a smooth, nut-free version. The fudge will still be rich and delicious.
2. Can I use dark chocolate instead of semisweet?
Yes! Dark chocolate adds a more intense cocoa flavor. Use the same quantity and adjust sweetness to taste.
3. Why is my fudge grainy?
Grainy texture usually happens from overheating or over-stirring. Make sure to melt on low heat and stir gently.
4. How do I cut the fudge cleanly?
Use a sharp knife and wipe it clean between each cut. You can also warm the blade slightly for extra smooth slices.
5. Can I add other mix-ins?
Yes! Try mini marshmallows, crushed peppermint, or toffee bits for a fun twist on the classic recipe.
6. How long does fudge last?
At room temp, about a week. In the fridge, up to 3 weeks. In the freezer, it can last 3 months or more.
7. Is sweetened condensed milk necessary?
Yes, it provides the perfect creamy sweetness and texture. Substitutions may not yield the same result.
8. Can I double the recipe?
Definitely. Use a 9×13-inch pan and increase chilling time slightly to ensure it sets properly.

The Irresistible Charm of Mackinac Island Fudge
- Total Time: 3 hours 10 minutes
- Yield: About 25 squares
Description
Smooth, creamy, and impossibly rich—Mackinac Island Fudge is the kind of dessert that turns an ordinary day into something sweetly memorable. Inspired by the charming fudge shops on Michigan’s Mackinac Island, this chocolate treat is the definition of indulgence. Whether you’re looking for a quick dessert idea, easy recipe to share with friends, or something to satisfy your sweet tooth, this fudge is a classic.
Ingredients
3 cups semisweet chocolate chips
1 can (14 oz) sweetened condensed milk
1/2 cup unsalted butter
1 teaspoon vanilla extract
1 cup chopped walnuts (optional)
1/2 teaspoon salt
Extra chocolate chips for topping (optional)
Instructions
- Line an 8×8-inch baking dish with parchment paper or foil, lightly greased.
- In a saucepan over low heat, melt chocolate chips, sweetened condensed milk, and butter. Stir until smooth.
- Remove from heat and stir in vanilla and salt. Fold in chopped walnuts.
- Pour mixture into prepared pan and smooth the top.
- Sprinkle extra chocolate chips over the top if desired.
- Refrigerate for at least 3 hours or until firm.
- Lift from pan and slice into squares. Enjoy!
- Prep Time: 10 minutes
- Chilling Time: 3 hours
- Category: Dessert