Grasshopper Fudge Recipe: Creamy Mint-Chocolate Squares

Grasshopper fudge pairs a rich chocolate layer with a cool, minty white-chocolate layer for an easy slice-and-serve candy. It is made on the stovetop or in the microwave with sweetened condensed milk, so there is no candy thermometer or complicated sugar syrup to manage.

Ingredients

1 teaspoon (5 ml) neutral oil or softened butter, for greasing the pan
3 cups (510 g) semisweet chocolate chips, or finely chopped semisweet chocolate
¾ cup (180 ml/about 225 g) sweetened condensed milk, for the chocolate layer
1 tablespoon (14 g) unsalted butter, for the chocolate layer
⅛ teaspoon (about 0.5 g) fine salt, for the chocolate layer
½ teaspoon (2.5 ml) vanilla extract
2 cups (340 g) white chocolate chips, or finely chopped white chocolate
½ cup (120 ml/about 150 g) sweetened condensed milk, for the mint layer
1 tablespoon (14 g) unsalted butter, for the mint layer
⅛ teaspoon (about 0.5 g) fine salt, for the mint layer
¼ teaspoon (1.25 ml) peppermint extract
2–4 drops green food coloring, or to the shade you like
½ cup (about 50 g) finely chopped chocolate sandwich cookies, optional, for the top

Instructions

Prepare the pan. Lightly grease a 9-inch (23 cm) square baking pan, then line it with parchment paper, leaving some overhang on two sides. The grease helps the paper stay in place while you spread the fudge. Measure the ingredients before starting; both layers thicken quickly once they are melted.
Melt the chocolate layer. Put the semisweet chocolate, ¾ cup condensed milk, 1 tablespoon butter, and ⅛ teaspoon salt in a heatproof bowl. Microwave in 20-second bursts, stirring thoroughly after each one, until the chocolate is mostly melted. Stir until smooth; residual heat should finish melting any small pieces. This usually takes about 1½–2 minutes, depending on the microwave. Avoid overheating, which can make chocolate seize or turn grainy.
Flavor and spread the base. Stir the vanilla into the melted chocolate mixture. Scrape it into the prepared pan and spread it evenly into the corners with a flexible spatula. Let the base stand at room temperature for 15 minutes so it firms slightly before the next layer goes on. It should be tacky but not liquid; waiting helps the layers stay distinct when sliced.
Melt the mint layer. In a clean heatproof bowl, combine the white chocolate, ½ cup condensed milk, 1 tablespoon butter, and ⅛ teaspoon salt. Microwave in 15- to 20-second bursts, stirring each time, until smooth. White chocolate scorches more easily than semisweet chocolate, so stop heating while a few soft pieces remain and stir them in until melted. Stir in the peppermint extract and 2 drops of green food coloring. Add more coloring a drop at a time if you want a stronger green.
Layer and decorate. Spread the mint mixture gently over the chocolate base, taking care not to press hard enough to disturb the lower layer. Scatter the chopped cookies over the surface, if using, and press them very lightly into the fudge so they adhere. The cookie topping adds crunch and a familiar chocolate-cookie flavor, but the fudge is equally good without it.
Chill until firm. Cover the pan loosely and refrigerate for 3 hours, or until the center is firm enough to cut cleanly. If your refrigerator is crowded or the fudge is still soft in the middle, give it another 30–60 minutes. Do not put it in the freezer to rush the setting; the surface can become very hard while the middle is still soft.
Cut into squares. Lift the fudge out using the parchment overhang and place it on a cutting board. For neat portions, warm a large, sharp knife under hot water, wipe it completely dry, and cut straight down. Clean and dry the blade between cuts. Cut into 25 small squares, or make larger pieces if you prefer; this is rich candy, so small portions are often enough.

Tips

Use peppermint extract sparingly. Peppermint flavor varies between brands, and too much can taste medicinal. Start with ¼ teaspoon, then taste the melted mint mixture before spreading it. Add only a tiny extra drop if you want more intensity; extracts become especially noticeable after the fudge chills.
Keep water away from melting chocolate. Even a little water or steam can make chocolate seize and turn stiff. Use dry bowls and utensils, and if you choose the stovetop method, make sure the bottom of the bowl does not touch the simmering water beneath it.
Choose chips or chopped bars with the texture in mind. Chocolate chips hold their shape by design and can melt more slowly, so stir patiently. Chopped baking chocolate often melts smoothly, while some white baking chips contain stabilizers and may stay thicker. Either can work; gentle heat and steady stirring matter most.
Make the layers even. Spread the bottom layer to the corners, then let it rest for the full 15 minutes before adding the mint layer. If the base is still very fluid, the two colors can swirl together. If it becomes completely cold and firm, the top may not bond as well, so aim for a slightly tacky surface.

Serving Suggestions

Serve the squares cool or at room temperature, arranged in a single layer on a small plate or candy tray. Their mint-and-chocolate flavor makes them a natural finish after coffee or a simple dessert, and the green-and-brown layers look striking alongside plain chocolate truffles, shortbread, or fresh strawberries. For a dessert table, cut the fudge into bite-size pieces and place them in miniature paper candy cups; this makes the rich portions easier to pick up without sticky fingers.

For the cleanest flavor and firmest texture, take the fudge out of the refrigerator about 10–15 minutes before serving. It should soften slightly but still hold its square shape. If the room is warm, leave it chilled until just before serving and return any remaining pieces to the refrigerator rather than leaving the tray out for hours.

Variations

Make it a single-layer mint fudge. For a simpler batch, stir the peppermint extract and green coloring into the melted semisweet chocolate mixture and use the white chocolate layer as a drizzle instead. The result will be darker and more cocoa-forward, with less of the creamy contrast between layers. Add the mint gradually so it does not overpower the chocolate.

Use a natural-looking pale green. Leave out the food coloring for a white mint layer, or use a small amount of gel coloring for a more vivid shade. Liquid coloring can loosen the mixture if too much is added, so add it by drops and stop once the color looks right. The color does not affect how the fudge sets.

Change the topping. Replace the chopped sandwich cookies with ⅓ cup (about 40 g) finely chopped toasted pistachios, cacao nibs, or dark chocolate shavings. Pistachios add a gentle crunch and a green accent; cacao nibs are less sweet and slightly bitter. Add toppings while the mint layer is still soft so they stay in place.

Use a different mint flavor. Spearmint extract gives a softer, sweeter mint note than peppermint, while peppermint is sharper and more familiar in chocolate candies. Use the same small starting quantity, then adjust cautiously. Vanilla can replace the mint for a plain two-tone chocolate fudge, though it will no longer have the classic grasshopper flavor.

Storage and Reheating

Store the fudge in an airtight container in the refrigerator for up to 2 weeks. Separate stacked layers with parchment paper so the cookie topping does not rub against the next layer and the squares do not stick together. Refrigerate leftovers within 2 hours of serving, especially in a warm room. The fudge does not need reheating; warming it can soften the layers and make the pieces difficult to handle.

For a softer bite, let only the portion you plan to eat stand at room temperature for about 10–15 minutes. To freeze, arrange the cut squares in a freezer-safe airtight container with parchment between layers and freeze for up to 2 months for best quality. Thaw the container overnight in the refrigerator, then bring a few pieces toward room temperature before serving. Keeping the container closed while it thaws helps limit condensation on the chocolate.

Frequently Asked Questions

Can I make grasshopper fudge without a microwave?

Yes. Put each layer’s ingredients in a separate heatproof bowl set over a saucepan of gently simmering water. Keep the bowl above the water rather than in contact with it, and stir until the mixture is smooth. Remove the bowl from the heat as soon as the chocolate melts. The stovetop method gives you close control, but it takes about the same amount of active time.

Can I use creme de menthe instead of peppermint extract?

You can use a small amount of creme de menthe for a liqueur-style mint flavor, but it adds liquid and may affect the set if you use too much. Replace the peppermint extract with 1 teaspoon (5 ml) creme de menthe, then check that the melted mixture remains thick and spreadable. For a stronger flavor, peppermint extract is more concentrated and gives a firmer, more predictable result.

Why is my fudge soft or not setting?

It may need more chilling time, particularly if the chocolate mixture was overheated or the white chocolate had a high proportion of stabilizers. Refrigerate it for another 30–60 minutes before judging the texture. Also check that the condensed milk was sweetened condensed milk, not evaporated milk; evaporated milk is thinner and does not provide the same structure in this no-cook fudge.

Can I make this recipe with milk chocolate?

Milk chocolate can replace the semisweet chocolate, but the base will be sweeter and softer. For a better balance, use 2½ cups (about 425 g) milk chocolate and keep the same amount of condensed milk; chill thoroughly before cutting. Since milk chocolate is more delicate, melt it in short bursts and stop heating as soon as it becomes smooth.

How do I cut the fudge without cracking the top?

Let the fudge sit at room temperature for a few minutes, then use a sharp knife warmed under hot water and wiped dry. Press down in one steady motion instead of sawing back and forth, and clean the blade between cuts. If the top is still brittle, allow it a few more minutes to soften; cutting it straight from a very cold refrigerator can make the surface crack.

More recipes to cook

Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

Spotted an error? Tell us and we will correct it (corrections policy).