Lemon Curd Ice Cream with Buttermilk and Shortbread Cookie Crumble
Lemon tart meets ice cream
Citrus that sings, crumbs that crunch, a cool swirl that makes you grin
Time: Active about 45 minutes and chill 4 to 6 hours and freeze until set
Yield: About 1 quart
Flavor vibe: Bright lemon custard with buttery cookie crunch
Texture: Creamy and scoopable with ribbons of tart curd and crisp crumbs
Signature move: Tangy buttermilk base plus a real lemon curd ribbon
I built this lemon curd ice cream because I wanted lemon tart energy without turning on the oven for an actual tart. The base is a custard mixed with buttermilk, which adds gentle tang and keeps things light while the heavy cream locks in body. You get a vivid lemon curd swirl for real citrus pop and a shortbread cookie crumble for that classic buttery bite. The first spoon tastes like chilled lemon pie with a vanilla finish, and the second spoon tastes like you made a very good decision. If you are here for a lemon curd ice cream recipe that is bright, creamy, and easy to scoop, you are in the right place.
The method is simple. Cook a custard with egg yolks for emulsifiers and richness, cool it completely, then whisk in buttermilk so the acidity lifts the flavor without making the texture thin. Make a quick curd with fresh lemon juice, zest, yolks, sugar, and a touch of butter. The curd is strained for silk and cooled until it is thick but still spoonable. For crunch I use shortbread cookie pieces, lightly toasted with a little butter and sugar so they stay crisp in the freezer. When you churn, fold the crumbs in at the end and layer in ribbons of curd for clean pockets of tart citrus. The result reads like a composed dessert in every scoop.
Value promise: you get creamy custard, bright lemon intensity, and real cookie crunch with a dependable churn and a swirl that stays distinct after freezing. Serve it solo, with fresh berries, or next to a slice of pound cake when you want applause at the table.
“A spoon of sunshine with a butter crumb chaser.”
Ingredient Notes
Base choice
Heavy cream brings body and smooth mouthfeel. Buttermilk adds gentle acidity for a cleaner finish. I use large egg yolks for richness and stability, and real vanilla to round the citrus. If you want the why behind it, this Exploratorium explainer shows how egg proteins gently coagulate to set a custard and why low and slow heat matters.
Flavor drivers
Fresh lemon juice and zest are non negotiable. Choose lemons that feel heavy for their size. If your lemons taste bold and sweet, reduce the sugar in the curd by a spoonful to taste.
Texture helpers
Sugar lowers the freezing point for scoopability. Salt sharpens both lemon and vanilla. The custard is cooked to about one hundred seventy to one hundred seventy five degrees Fahrenheit so it coats the back of a spoon and sets cleanly when chilled.
Equipment that matters
An accurate digital scale, an instant read thermometer, a fine mesh sieve, and a reliable ice cream maker. A parchment lined sheet pan keeps cookie crumbs crisp as they toast.
How To Make It
Buttermilk custard base
Cook a classic yolk custard with cream, sugar, and salt until it coats the spoon, stir in vanilla off heat, then whisk in buttermilk once it cools slightly. Strain for silk and chill fully.
Lemon curd swirl
Whisk juice, sugar, yolks, and zest. Cook gently over a double boiler until thick. Finish with butter and strain for a glossy, smooth curd. Chill until thick but pourable.
Shortbread cookie crumble
Toss crushed shortbread with a little melted butter and sugar. Bake briefly until the edges are just golden. Cool completely so the pieces stay crisp in the ice cream.
Chill and set
Your base and your curd must be completely cold. Cold mix equals small ice crystals and a clean swirl.
Churn and layer
Churn the base until soft serve. Fold in crumbs during the last minutes. Layer ice cream and curd in a chilled container and give one gentle figure eight with a knife. Freeze until firm.
Why You'll Love This
Lemon tart flavor in a scoopable custard you can actually dip into without a fight.
Buttermilk adds lift and brightness without making the base icy.
Shortbread crumbs stay crisp for real texture contrast.
Easy make ahead since every part can be prepared the day before.
Crowd friendly flavor that works on its own or with fresh berries.
Pro Tips and Fixes
- Curd sank to the bottom: it was too thin. Cook to a thicker nappe and chill until it mounds on a spoon.
- Icy texture: the base was not fully chilled or the churn was too short. Chill overnight and churn until it is fluffy and pulling from the sides.
- Soggy crumbs: toast longer and cool fully, then fold in at the very end of churning.
- Storage and scooping: cover the surface with parchment or wax paper to prevent ice crystals and let the container sit at room temp for a few minutes before scooping.
- Make ahead: base, curd, and crumbs can be made one day in advance. Keep each chilled and covered.
FAQs
Can I make lemon curd ice cream without an ice cream maker?
You can freeze the base in a shallow pan and whisk every thirty minutes until thick and creamy. The texture will be less fine, but it will still be tasty. Keep the curd thick so the swirl holds.
Should I use store bought lemon curd or make my own?
Homemade gives brighter flavor and better texture since you control the cook and the sugar. If using store bought, choose one with real butter and egg yolks and warm it slightly if it is too stiff to ribbon.
How long does this keep and how should I store it?
Best within one week for peak texture and lemon pop. Press parchment on the surface and keep the lid tight. If crystals form, let it soften a few minutes and scrape off the top layer before scooping.
More Recipes Like This
Buttermilk Ice Cream Base — the clean, tangy canvas that makes citrus and berry swirls shine.
Vanilla Crunch Cookie — a crisp mix in that adds texture to any creamy base.
Ingredients
Buttermilk Ice Cream Base
- 500 g heavy cream
- 250 g buttermilk
- 120 g granulated sugar
- 72 g egg yolks 4 large eggs
- 1 tsp vanilla extract
- 1/2 tsp sea salt
Lemon Curd
- 100 g fresh lemon juice
- 100 g granulated sugar
- 72 g egg yolks 4 large eggs
- 2 tbsp unsalted butter
- Zest of 1 whole lemon
Vanilla Cookies
- 190 g all-purpose four
- 15 g corn starch
- 1/2 tsp baking soda
- 1/4 tsp sea salt
- 140 g butter melted or browned
- 100 g granulated sugar
- 25 g light brown sugar
- 1 tbsp whole milk
- 1 tbsp vanilla extract
Cookie Crumble
- 100 g homemade or store bought shortbread or vanilla cookies about 1 cup
- 20 g butter melted
- 15 g granulated sugar optional
Instructions
Make the Buttermilk Ice Cream Base
- In a medium saucepan, whisk together the heavy cream, sugar, egg yolks, and salt until smooth.500 g heavy cream, 120 g granulated sugar, 72 g egg yolks, 1/2 tsp sea salt
- Set over medium-low heat and cook gently, stirring constantly with a heatproof spatula or wooden spoon, making sure to scrape the bottom and edges of the pan.
- Cook until the mixture thickens and coats the back of a spoon (77–80°C / 170–175°F). Do not boil.
- Remove from heat and stir in the vanilla extract.1 tsp vanilla extract
- Let cool slightly, then whisk in the buttermilk.250 g buttermilk
- Strain through a fine-mesh sieve into a clean bowl or container.
- Cover and refrigerate until thoroughly chilled at least 4 hours, 6 hours is better, overnight is best - before churning.
Make the Lemon Curd Swirl
- In a heatproof bowl, whisk together the lemon juice, sugar, egg yolks, and lemon zest until well combined.100 g fresh lemon juice, 100 g granulated sugar, 72 g egg yolks, Zest of 1 whole lemon
- Set the bowl over a gently simmering pot of water (double boiler) and cook, stirring constantly with a spatula or whisk, until the curd thickens and reaches 170°F (77°C), or coats the back of a spoon.
- Remove from heat and immediately whisk in the butter until smooth and fully incorporated.2 tbsp unsalted butter
- Strain through a fine-mesh sieve into a clean container to remove any zest or cooked bits.
- Let cool completely, then refrigerate until ready to use.
Make the Vanilla Crunch Cookies
- Brown the Butter: In a small saucepan, melt the butter over medium heat until it smells nutty and golden flecks appear. Immediately pour into a mixing bowl to cool slightly (5–10 minutes).140 g butter
- Whisk Dry Ingredients: In a separate bowl, whisk together the flour, cornstarch, baking soda, and salt.190 g all-purpose four, 15 g corn starch, 1/2 tsp baking soda, 1/4 tsp sea salt
- Mix Wet Ingredients: To the cooled browned butter, add granulated sugar, brown sugar, vanilla, and milk. Stir until smooth and glossy.100 g granulated sugar, 25 g light brown sugar, 1 tbsp whole milk, 1 tbsp vanilla extract
- Combine: Add the dry ingredients to the wet and stir until a stiff dough forms. It may look crumbly at first — just keep mixing. If it feels too dry, add ½ teaspoon more milk.
- Shape & Bake: Preheat the oven to 350°F (175°C) and line a baking sheet with parchment.Roll dough into 1-teaspoon-sized balls, place 2 inches apart, and press each one flat (they won’t spread much). Bake for 12–14 minutes, or until edges are golden and centers are just set
- Cool Completely:Transfer cookies to a wire rack and let them cool fully. They’ll crisp up as they cool — perfect for crumble duty.
Create the Crumble (extra crunch for ice cream)
- Preheat your oven to 175°C (350°F) and line a baking sheet with parchment paper.
- In a bowl, toss the crushed shortbread cookies with the melted butter and sugar (if using) until evenly coated.100 g homemade or store bought shortbread or vanilla cookies, 20 g butter, 15 g granulated sugar
- Spread the mixture into an even layer on the prepared baking sheet.
- Bake for 5–7 minutes, stirring once halfway through, until lightly golden and just crisp around the edges.
- Let cool completely before folding into the churned ice cream.
Nutrition
