Maple Walnut Custard Ice Cream

Quick Recipe Version (TL;DR)

• Yield: 1 quart, about 8 servings
• Prep Time: 25 minutes active
• Cook Time: 20 minutes
• Total Time: 8 hours 45 minutes, including chilling and freezing

Quick Ingredients

• 1 cup pure maple syrup, preferably Grade A Dark Color, Robust Taste
• 2 cups heavy cream
• 1 cup whole milk
• 5 large egg yolks
• 1/4 teaspoon fine sea salt
• 1 teaspoon vanilla extract
• 1 cup chopped walnuts
• 1 tablespoon unsalted butter, melted
• 1 tablespoon pure maple syrup, for the walnuts
• 1/8 teaspoon fine sea salt, for the walnuts

Do This

• 1. Heat the oven to 350°F and toast the walnuts with melted butter, 1 tablespoon maple syrup, and salt for 8 to 10 minutes; cool completely.
• 2. Simmer 1 cup maple syrup in a saucepan for 5 to 7 minutes, until reduced to about 3/4 cup and deeply fragrant.
• 3. Add cream, milk, and salt to the reduced syrup; heat until steaming, about 160°F.
• 4. Whisk egg yolks in a bowl, slowly temper with 1 cup hot cream mixture, then return everything to the pan.
• 5. Cook over medium-low heat, stirring constantly, until the custard reaches 170°F to 175°F and coats a spoon.
• 6. Strain, stir in vanilla, chill at least 4 hours, then churn in an ice cream maker for 20 to 25 minutes.
• 7. Fold in the toasted walnuts, transfer to a freezer container, and freeze for at least 4 hours before scooping.

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Why You’ll Love This Recipe

• Deep maple flavor: Reducing the maple syrup concentrates its caramel-like sweetness without needing artificial flavoring.
• Rich, scoopable custard texture: Egg yolks, cream, and slow cooking create a silky ice cream base that feels luxurious but is very manageable at home.
• Crunchy toasted walnuts: A quick maple-butter toast makes the walnuts fragrant, nutty, lightly sweet, and perfect for folding into the churned ice cream.
• Comforting and classic: This is the kind of cozy, old-fashioned ice cream that tastes wonderful on its own or alongside apple pie, brownies, or warm bread pudding.

Grocery List

• Produce: None required
• Dairy: Heavy cream, whole milk, large eggs, unsalted butter
• Pantry: Pure maple syrup, chopped walnuts, fine sea salt, vanilla extract

Full Ingredients

For the Maple Custard Base

• 1 cup pure maple syrup, preferably Grade A Dark Color, Robust Taste
• 2 cups heavy cream
• 1 cup whole milk
• 5 large egg yolks
• 1/4 teaspoon fine sea salt
• 1 teaspoon vanilla extract

For the Toasted Maple Walnuts

• 1 cup chopped walnuts
• 1 tablespoon unsalted butter, melted
• 1 tablespoon pure maple syrup
• 1/8 teaspoon fine sea salt

Equipment

• Ice cream maker with a fully frozen bowl, if using a freezer-bowl model
• Medium saucepan
• Whisk
• Heatproof mixing bowl
• Fine-mesh strainer
• Instant-read thermometer
• Rimmed baking sheet
• Parchment paper
• Freezer-safe ice cream container with lid

Step-by-Step Instructions

Step 1: Toast the maple walnuts

Heat the oven to 350°F. Line a rimmed baking sheet with parchment paper. In a small bowl, toss together 1 cup chopped walnuts, 1 tablespoon melted unsalted butter, 1 tablespoon pure maple syrup, and 1/8 teaspoon fine sea salt until the walnuts are lightly coated.

Spread the walnuts in a single layer on the prepared baking sheet. Bake for 8 to 10 minutes, stirring once halfway through, until they smell toasty and look slightly glossy. Let them cool completely on the baking sheet. Once cool, break up any clusters and set the walnuts aside. For the best texture, refrigerate or freeze the cooled walnuts while the custard chills so they do not soften the ice cream when folded in.

Step 2: Reduce the maple syrup

Pour 1 cup pure maple syrup into a medium saucepan. Bring it to a gentle boil over medium heat, then reduce the heat slightly and simmer for 5 to 7 minutes, watching closely. The syrup should bubble actively, smell deeply caramel-like, and reduce to about 3/4 cup.

This small reduction step concentrates the maple flavor and removes some excess water, helping the finished ice cream taste richer and freeze with a smoother texture. If the syrup starts to foam too high, lower the heat immediately and swirl the pan gently.

Step 3: Warm the cream and milk

Reduce the heat to medium-low. Carefully whisk 2 cups heavy cream, 1 cup whole milk, and 1/4 teaspoon fine sea salt into the reduced maple syrup. The mixture may bubble at first because the syrup is hot, so pour slowly and whisk steadily.

Warm the dairy mixture until it is steaming and reaches about 160°F on an instant-read thermometer, 3 to 5 minutes. Do not let it boil. Once it is hot and steaming, remove the saucepan from the heat.

Step 4: Temper the egg yolks

Place 5 large egg yolks in a heatproof mixing bowl and whisk until smooth. While whisking constantly, slowly ladle or pour about 1 cup of the hot maple cream mixture into the yolks in a thin stream. Take your time here; adding the hot liquid gradually warms the yolks without scrambling them.

Once the yolk mixture is warm and smooth, slowly whisk it back into the saucepan with the remaining maple cream mixture.

Step 5: Cook the custard

Return the saucepan to medium-low heat. Cook the custard, stirring constantly with a heatproof spatula or wooden spoon, for 5 to 8 minutes, until it reaches 170°F to 175°F. The custard should lightly coat the back of a spoon, and if you draw a line through it with your finger, the line should hold.

Do not let the custard boil. If it begins to steam aggressively or you see tiny bubbles forming around the edges too quickly, lower the heat. Slow, gentle cooking is the secret to a silky maple walnut ice cream base.

Step 6: Strain and chill the custard

Pour the custard through a fine-mesh strainer into a clean bowl. This catches any tiny bits of cooked egg and ensures the smoothest possible texture. Stir in 1 teaspoon vanilla extract.

For faster cooling, set the bowl of custard over a larger bowl filled with ice water and stir for 5 to 10 minutes, until the custard is no longer hot. Cover the custard and refrigerate for at least 4 hours, or up to 24 hours. The base should be thoroughly cold, ideally 40°F or below, before churning.

Step 7: Churn the ice cream

Set up your ice cream maker according to the manufacturer’s instructions. Pour the cold maple custard into the machine and churn for 20 to 25 minutes, or until it looks thick, creamy, and similar to soft-serve ice cream.

During the final 1 minute of churning, add the chilled toasted walnuts. If your machine is very full or struggles with mix-ins, transfer the churned ice cream to a chilled bowl and fold in the walnuts by hand with a spatula.

Step 8: Freeze until scoopable

Transfer the churned maple walnut ice cream to a freezer-safe container. Smooth the top, press a piece of parchment paper directly onto the surface, and cover with a lid. Freeze for at least 4 hours, or until firm enough to scoop.

For the creamiest scoops, let the ice cream sit at room temperature for 5 to 10 minutes before serving. Serve in bowls, cones, or alongside warm apple desserts, brownies, pancakes, or waffles.

Pro Tips

• Use real maple syrup: Pancake syrup will not give the same deep, woodsy, caramel-like flavor. Grade A Dark Color, Robust Taste maple syrup is especially good here.
• Chill thoroughly before churning: A very cold custard freezes faster in the machine, which creates smaller ice crystals and a creamier texture.
• Do not skip straining: Even a well-cooked custard can have tiny cooked egg bits. Straining keeps the ice cream smooth and professional-tasting.
• Cool the walnuts completely: Warm nuts can melt the freshly churned ice cream and create icy pockets. Chilled nuts fold in cleanly and stay crunchy.
• Watch the custard temperature: Pull it from the heat at 170°F to 175°F. Above 180°F, the yolks are more likely to scramble.

Variations

• Maple pecan ice cream: Replace the walnuts with 1 cup chopped pecans and toast them the same way for a sweeter, buttery variation.
• Bourbon maple walnut: Stir 1 tablespoon bourbon into the strained custard along with the vanilla. It adds warmth and helps the ice cream stay slightly softer.
• Salted maple walnut: Increase the salt in the walnut mixture to 1/4 teaspoon and finish each serving with a tiny pinch of flaky sea salt for a sweet-salty contrast.

Storage & Make-Ahead

Store maple walnut ice cream in an airtight freezer-safe container with parchment pressed directly onto the surface to help prevent ice crystals. It is best within 1 week for the freshest walnut crunch, but it will keep for up to 2 weeks. The custard base can be made and refrigerated up to 24 hours before churning. The toasted walnuts can be made up to 3 days ahead and stored in an airtight container at room temperature; for maximum crunch, chill them before folding into the ice cream.

Nutrition (per serving)

Calories: 475 kcal | Carbs: 34g | Protein: 6g | Fat: 37g | Saturated Fat: 17g | Fiber: 1g | Sugar: 32g | Sodium: 145mg | Cholesterol: 202mg