Gluten Free Jam Tarts with Buttery Shortcrust Pastry

Gluten free jam tarts are small, buttery pastry shells filled with fruit jam and baked until the edges turn golden and the filling bubbles. This simple version uses a flour blend with xanthan gum for tender, workable pastry, and a short chill helps the dough hold its shape.

Ingredients

1 ½ cups (210 g) gluten-free all-purpose flour blend, preferably one that contains xanthan gum
¼ cup (30 g) powdered sugar
¼ teaspoon fine salt
½ cup (113 g) cold unsalted butter, cut into small cubes
1 large egg, cold (about 50 g without shell)
1 teaspoon (5 ml) cold water, plus up to 1 additional teaspoon (5 ml) if needed
½ cup (160 g) smooth or lightly textured fruit jam, such as raspberry, strawberry, apricot, or blackcurrant
1 teaspoon (5 ml) milk, for brushing the pastry (optional)

Instructions

Mix the dry ingredients. In a medium bowl, whisk the gluten-free flour, powdered sugar, and salt until evenly combined. If your flour blend does not contain xanthan gum, add ¼ teaspoon (about 1 g) xanthan gum; without a binder, the pastry may be more fragile.
Work in the butter. Add the cold butter and rub it into the flour with your fingertips, or cut it in with a pastry cutter, until the mixture resembles coarse crumbs with some pea-size pieces. Keeping the butter cool helps the pastry stay tender.
Bring the dough together. Beat the egg with 1 teaspoon (5 ml) cold water. Pour it into the flour mixture and stir with a fork until the dough begins to clump. Squeeze a small piece between your fingers: if it holds together, stop mixing. If it remains dry and sandy, add the extra water a little at a time. Do not add all of it automatically; gluten-free blends vary in how much liquid they absorb.
Chill the dough. Press the dough into a flat disc, wrap it, and refrigerate for 30 minutes. This firms the butter and makes the dough easier to roll and shape.
Prepare the tin and oven. Heat the oven to 350°F (175°C). Lightly grease a 12-cup standard muffin tin or shallow tartlet tin. If using a dark nonstick tin, begin checking the tarts a couple of minutes early.
Roll and cut the pastry. Place the chilled dough between two sheets of parchment and roll it about ⅛ inch (3 mm) thick. Cut 12 rounds about 3 ½ inches (9 cm) across, re-rolling scraps gently as needed. If the dough cracks, press it back together with your fingers; gluten-free pastry is less stretchy than wheat pastry. Fit each round into a cup, pressing lightly into the base and sides without stretching it. Patch small tears with a little spare dough.
Fill the shells. Spoon about 2 teaspoons (10 g) jam into each pastry shell, leaving a little room at the top because jam can bubble as it heats. Avoid overfilling, which can make the jam spill onto the tin and stick. Brush exposed pastry edges with milk if you would like a slightly deeper golden finish.
Bake and cool. Bake for 16–18 minutes, until the pastry edges are lightly golden and the jam is visibly bubbling. Set the tin on a heatproof surface and leave the tarts in it for 10 minutes; hot jam is extremely hot and runny. Carefully lift the tarts out with a small offset spatula or butter knife and transfer them to a rack to cool completely. The filling thickens as it cools.

Tips

Check the flour label. Choose a baking blend intended for pastry or cakes, not a bean-heavy blend that can taste earthy. If the blend already includes xanthan gum, do not add more.
Keep the dough cool. If it becomes soft or sticky while rolling, slide the parchment and dough onto a tray and chill it for 10 minutes. Warm dough is more likely to tear and spread.
Choose a thick jam. A firm jam or preserve is less likely to overflow than a loose, syrupy one. Stir it before filling so it is easy to portion, but do not thin it with water.
Let them cool before moving. The pastry is delicate while hot, and the jam can burn. Allow the full 10-minute rest in the tin before lifting the tarts out.

Serving Suggestions

Serve the tarts at room temperature with tea or coffee as a small dessert, afternoon treat, or addition to a pastry plate. Their fruit filling pairs well with lightly sweetened whipped cream, vanilla ice cream, or plain yogurt served on the side. For a simple finish, dust the pastry edges with a little powdered sugar after the tarts have cooled; avoid dusting the jam, where it will dissolve.

Variations

Use one kind of jam for a uniform batch or divide the filling among several flavors. Raspberry and blackcurrant give a tangier result, while strawberry or apricot tends to be sweeter. For a citrus note, stir ½ teaspoon (2 g) finely grated lemon zest into the dough. You can also replace the jam with thick fruit preserves, removing any large, firm pieces of fruit before filling so they fit the shallow shells.

For dairy-free tarts, use a firm plant-based butter stick designed for baking in place of the butter; soft tub spreads contain more water and can make the pastry difficult to handle. For an egg-free option, the dough can be less sturdy: replace the egg with 3 tablespoons (45 ml) cold water and add it gradually, stopping as soon as the dough holds together. Chill it well and handle the rounds gently. Check the flour blend and jam labels if you need to avoid other allergens or confirm gluten-free labeling.

Storage and Reheating

Once completely cool, place the tarts in an airtight container. They keep at room temperature in a cool, dry place for up to 2 days, or refrigerated for up to 4 days. Refrigerate them within 2 hours if the room is warm or if they have been served alongside perishable foods. The pastry softens gradually as it sits, so room-temperature storage gives the best texture when conditions allow.

To refresh refrigerated tarts, warm them on a baking sheet at 300°F (150°C) for 5–7 minutes, then let them cool briefly before serving. The jam becomes hot during reheating. Freeze cooled tarts in a sealed container, separated with parchment, for up to 2 months; thaw at room temperature and warm briefly if desired. Do not leave reheated tarts out for more than 2 hours.

Frequently Asked Questions

Can I make the pastry ahead?
Yes. Wrap the dough disc and refrigerate it for up to 24 hours. Let it sit at room temperature for about 5–10 minutes if it is too firm to roll, then shape and bake as directed. You can also freeze the wrapped dough for up to 2 months and thaw it overnight in the refrigerator.

Why did my gluten-free pastry crack?
Some cracking is normal because gluten-free dough does not stretch like wheat dough. If it cracks as you roll, press the edges together or patch the shell with scraps. If the whole dough is dry and crumbling, work in cold water a teaspoon (5 ml) at a time until it holds together when squeezed.

Can I use a muffin tin instead of a tartlet tin?
Yes. A standard 12-cup muffin tin works well, though its cups may be deeper than a shallow tartlet tin. Do not fill the shells to the rim; 2 teaspoons (10 g) of jam per tart is usually enough to leave room for bubbling.

Can I use homemade jam?
Yes, if it is thick enough to stay in a spoon. Loose jam can boil over and make the tarts difficult to remove. Refrigerate homemade jam according to its own recipe and keep the finished tarts chilled when needed; this recipe is not a method for preserving jam or storing it at room temperature long term.

How can I tell when the tarts are baked?
Look for lightly golden pastry edges and jam bubbling in the center. The filling may still look loose in the oven, but it firms as it cools. Avoid waiting for the jam to look completely set while baking, since that can overbrown the pastry.

Are these tarts suitable for people with celiac disease?
They can be made with ingredients labeled gluten-free, but check the flour blend, jam, and any additions for gluten and cross-contact statements. Use clean utensils, a clean work surface, and a tin that has not been exposed to wheat flour residue.

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