Vegan Caramelized Root Vegetable Tarte Tatin
A stunning inverted pastry showcasing layers of Japanese, orange, and purple sweet potatoes plus butternut squash atop a sherry vinegar caramel. The vegetables emerge glossy and tender beneath golden puff pastry. Serve warm as an elegant vegetarian centerpiece or side for autumn entertaining. This version uses a springform pan for easier assembly and a sherry-based caramel for sophisticated depth beyond traditional apple tarte tatin.
Ingredients
- 2 Japanese sweet potatoes, peeled and sliced
- 2 orange sweet potatoes, peeled and sliced
- 2 purple potatoes, peeled and sliced
- 1 small butternut squash, peeled and sliced, or 2 small honeynut squash
- ½ cup sherry vinegar
- ¼ cup granulated sugar
- 4 sprigs fresh thyme
- salt
- all-purpose flour, for dusting
- 1 8.5-ounce sheet frozen puff pastry, thawed
Instructions
- 1
Preheat oven to 400 F.
- 2
Peel all sweet potatoes, purple potatoes, and squash. Slice into thin rounds using a sharp knife or mandoline.
- 3
In a small saucepan, combine sherry vinegar, sugar, and thyme sprigs. Bring to a simmer over medium heat.
- 4
Simmer for about 5 minutes until the mixture reduces to a syrup-like consistency. Remove and discard thyme sprigs.
- 5
Pour caramel into a springform pan, ensuring it covers the bottom evenly.
- 6
Arrange sliced vegetables over the caramel in a pattern or randomly, creating a 1/2 inch-thick layer covering the entire surface.
- 7
Season the vegetable layer with salt.
- 8
Dust a clean surface with flour. Roll out thawed puff pastry to cover the springform pan opening.
- 9
Place the pan on top of the dough and trim around the edge to create a circle.
- 10
Gently lay puff pastry over the vegetables, tucking edges to form a crust.
- 11
Cover with aluminum foil and bake for 20 minutes.
- 12
Remove foil and continue baking for 20 minutes until pastry is golden brown and vegetables are tender.
- 13
Cool for a few minutes, then remove the springform ring.
- 14
Place a large serving plate over the pan. Invert the tarte onto the plate.
- 15
Gently remove the springform base to reveal the caramelized vegetables.
- 16
Slice and serve immediately.
Tips
Use a mandoline for uniform thin slices; consistent thickness ensures even caramelization and tender vegetables throughout the tarte.
Cool the tarte a few minutes before inverting so the caramel sets slightly and the vegetables hold their pattern when released from the pan.
Arrange vegetable slices in a visually appealing pattern before covering with pastry, as they become the decorative top once inverted.
Good to Know
Cover and refrigerate up to 2 days. Reheat in a 350 F oven for 10-15 minutes to warm through and refresh the pastry.
Prepare vegetables and caramel up to 8 hours ahead. Assemble and bake closer to serving for the crispest pastry.
Serve warm within 30 minutes of baking while pastry remains flaky and caramel is glossy. Pairs well with crème fraiche, ricotta, or a simple green salad.
Common Mistakes
Slice vegetables too thick to avoid uneven cooking and undercooked centers.
Over-reduce the caramel to avoid it becoming hard and difficult to spread evenly.
Skip cooling before inverting to avoid the tarte falling apart or caramel sliding off the vegetables.
Substitutions
Vegan Options
General Alternatives
FAQ
Can I use a regular tarte tatin pan instead of a springform?
Yes, a 9-10 inch traditional tarte tatin pan works well. Pour caramel directly into the pan and arrange vegetables there. The inversion process remains the same, though you may need to warm the pan slightly before flipping to help release the caramel.
What if I don't have sherry vinegar?
Red wine vinegar, balsamic vinegar, or apple cider vinegar are suitable substitutes at a 1:1 ratio. Balsamic will taste slightly sweeter; adjust sugar downward by 1 tablespoon. Each vinegar adds different flavor notes to the caramel.
How long can I keep leftovers and can I freeze it?
Refrigerate covered up to 2 days; reheat gently to restore crispness. Freezing is not recommended as the pastry texture degrades significantly upon thawing, though cooled, wrapped slices may be frozen up to 1 month and eaten cold.