Butterscotch Parsnip Soufflé with Vanilla Custard
An elegant individual soufflé featuring caramelized butterscotch folded with delicate parsnip-infused meringue, served with a silky roasted vanilla bean custard sauce. The parsnip adds subtle earthy sweetness that balances rich butterscotch, while the soufflé's dramatic rise creates an impressive presentation. Perfect for special dinners or when you want to impress guests with technique-driven elegance. This version distinguishes itself by infusing both custard and soufflé base with parsnip for cohesive flavor, moving beyond typical fruit soufflés into savory-sweet territory.
Ingredients
- 4 tablespoons unsalted butter, softened
- 1 cup turbinado sugar
- 1 vanilla bean1.5 teaspoons vanilla extractsubstitutedietary
adds timing since extract doesn't require roasting; infuse only 5 minutes
Full guide → - ¼ cup cane sugar
- ½ cup heavy cream
- ½ cup whole milk
- 6 egg yolks
- 1 cup whole milk
- ¼ cup parsnips, gratedsweet potatosubstitutetexture
use same grated quantity; flavor becomes more pronounced
- ½ cup cane sugar, divided
- 1 tablespoon unsalted butter
- 1 egg yolk
- 2 teaspoons all-purpose flourcornstarchsubstitutedietarygluten-free
use equal weight; custard may set slightly faster
- 1 teaspoon cornstarch
- 3 egg whites
Instructions
- 1
Coat six 5-ounce ramekins with softened butter using a pastry brush, then coat evenly with turbinado sugar.
- 2
Preheat oven to 350 degrees.
- 3
Split vanilla bean lengthwise and scrape seeds into a small bowl. Mix seeds with cane sugar. Place scraped bean pod in oven for 10 minutes until aromatic.
- 4
Combine cream, milk, vanilla-sugar mixture, and roasted vanilla bean in a small pot. Bring to simmer and remove from heat. Let infuse for 20 minutes.
- 5
Return vanilla mixture to simmer. Temper egg yolks by whisking in 2-3 spoonfuls of warm dairy, then return yolk mixture to pot.
- 6
Cook over low heat while whisking until custard thickens slightly. Transfer to container and refrigerate.
- 7
Combine milk and grated parsnips in a small pot and bring to simmer. Remove from heat and infuse for 15 minutes. Strain through fine sieve, reserving milk.
- 8
Measure and reserve 2 tablespoons sugar for meringue. Place remaining sugar in a medium saucepan over medium-high heat.
- 9
Stir sugar gently once edges begin to caramelize, cooking until light amber in color.
- 10
Slowly whisk reserved parsnip-infused milk and butter into caramel. Remove from heat once combined.
- 11
Whisk together yolk, flour, and cornstarch until slightly pale. Add to caramel and return to medium heat.
- 12
Whisk continuously until mixture simmers and thickens. Remove from heat, transfer to a medium bowl, and cover directly with plastic.
- 13
Whip egg whites on medium speed until frothy. Add reserved 2 tablespoons sugar and continue whipping until stiff, silky peaks form.
- 14
Gently fold meringue into caramel base in three increments until no white streaks remain.
- 15
Divide mixture among prepared ramekins and bake for 15 minutes.
- 16
While soufflés bake, gently reheat custard sauce. Pour into a creamer or small pitcher.
- 17
Remove soufflés from oven, dust with confectioners' sugar if desired, pour hot custard into center, and serve immediately.
- 18
Break soufflé top gently with a spoon to release custard if needed.
Tips
Temper egg yolks carefully by whisking warm dairy in gradually to prevent cooking them. This ensures silky, lump-free custard and soufflé base.
Fold meringue gently in three additions to maintain airiness. Use a spatula and cut through center, then sweep along bowl edge.
Serve immediately after removing from oven. Soufflés deflate quickly once temperature drops, but the custard sauce keeps them moist inside.
Good to Know
Custard sauce keeps refrigerated in an airtight container for up to 3 days. Soufflé must be eaten immediately after baking and cannot be stored.
Prepare custard sauce up to 1 day ahead and refrigerate. Prepare caramel base, cover with plastic, and refrigerate for up to 8 hours. Bring to room temperature before folding in meringue. Ramekins can be buttered and sugared 2 hours ahead.
Serve warm with vanilla custard sauce drizzled into center. Optional dusting of confectioners' sugar adds visual elegance. Pairs well with dessert wine or coffee.
Common Mistakes
Do not skip tempering egg yolks to avoid scrambled eggs in custard or soufflé base.
Do not deflate meringue during folding to avoid dense, sunken soufflés.
Do not delay serving to avoid collapse as soufflé cools quickly.
Do not allow sugar to reach dark amber to avoid burnt, bitter caramel flavor.
Substitutions
Dairy-Free Swaps
Gluten-Free Swaps
General Alternatives
adds timing since extract doesn't require roasting; infuse only 5 minutes
Full guide →FAQ
Can I make this ahead of time?
The custard sauce and caramel base can be prepared 1 day and 8 hours ahead respectively. The final soufflé assembly and baking must happen just before serving since it begins to collapse within minutes of cooling.
What if my soufflé doesn't rise?
Ensure egg whites reach stiff peaks and fold gently to preserve air. Oven temperature must be accurate at 350 degrees F. Opening oven door during baking causes collapse. Room-temperature ingredients also help soufflé rise evenly.
Can I freeze the soufflé or custard sauce?
The custard sauce freezes well for up to 3 months in an airtight container. The baked soufflé cannot be frozen successfully as it loses its light texture upon thawing. Freeze components separately and reassemble fresh.