This upside down French tart starts with peaches caramelized in butter and sugar right in the skillet. A sheet of puff pastry goes on top, the whole thing bakes until golden, and then you flip it onto a plate to reveal glossy, jammy peaches sitting on a flaky crust. It looks like something from a Parisian patisserie window, but it comes together with just a handful of ingredients and one pan.
9 to 10 inch oven safe cast iron skillet heavy, oven-safe skillet that goes from stovetop to oven
Rolling Pin
Sharp paring knife
Cutting board
Wooden spoon
Large flat serving plate wider than the skillet
Offset spatula
Oven mitts
Digital instant-read thermometer optional, for checking caramel temperature
Ingredients
5medium ripe but firm peacheshalved, pitted, and cut into thick wedges (6 if smaller)
1/2cupgranulated sugar100g
4tablespoonsunsalted butter57g, cut into pieces
1teaspoonvanilla bean pasteor vanilla extract
1tablespoonfresh lemon juice15ml
fine salta pinch
1sheet frozen puff pastrythawed according to package directions, all-butter preferred
1tablespoonall purpose flourfor rolling out the pastry
For Serving (Optional)
vanilla ice creamor softly whipped cream, or lightly sweetened mascarpone
extra caramelor apricot glaze for shine (optional)
Instructions
Prepare peaches: Wash and pat dry. Halve, pit, and cut each half into 3 thick wedges. Toss with lemon juice and set aside.
Make caramel: Preheat oven to 400°F. Place skillet over medium heat, add sugar in even layer. Let melt undisturbed for 2-3 minutes, then swirl pan as it liquefies and turns golden. Cook to deep amber color, about 6-8 minutes. Remove from heat, whisk in butter pieces a few at a time, then stir in vanilla and salt until smooth.
Arrange peaches: Working quickly while caramel is warm, arrange peach wedges in tight concentric circles over caramel, rounded side down. Pack closely. Return skillet to medium heat and cook for 5 minutes to soften and reduce liquid.
Roll and add pastry: On floured surface, roll pastry slightly to smooth seams. Cut into circle 1-inch larger than skillet. Drape over peaches, tuck overhang down inside edge. Cut 3-4 small slits in center for steam to escape.
Bake tart: Place skillet in oven and bake for 25-30 minutes until pastry is deeply golden and puffed. Tent edges with foil if browning too quickly. Remove and rest 5-10 minutes.
Flip and serve: Run offset spatula around edge to loosen. Place serving plate upside down over skillet. With oven mitts, flip confidently. Lift skillet slowly, letting extra caramel drizzle down. Rearrange any shifted slices and serve warm.
Notes
Choose peaches that give slightly to gentle pressure but are not mushy; overripe fruit will turn watery in the caramel.
Do not stir the sugar while it caramelizes, only swirl the pan. Stirring can cause the sugar to seize and turn grainy.
Keep the puff pastry cold until the moment you need it; cold pastry puffs better in the hot oven.
Flip the tart while it is still warm; a fully cooled tart is more likely to stick to the pan.
Have your serving plate ready and nearby before you start the flip so you are not searching for it at the last second.
Swap in nectarines or plums for part of the peaches for a mixed stone fruit variation.
Stir a pinch of ground cinnamon or cardamom into the caramel for a warm spiced version, or add a splash of bourbon or dark rum.
Store leftover slices covered in the refrigerator for up to 3 days. Reheat in a 350°F oven for 8-10 minutes to re-crisp the pastry; avoid microwaving.
This tart does not freeze well once assembled, so plan to enjoy it fresh.