Treacle tart has been Harry Potter's dessert of choice since page one of the series — which means an entire generation grew up curious about it and never made one. That changes today. This is an authentic version based on Heston Blumenthal's recipe, with a proper gluten-free option that doesn't compromise the filling or the crust.
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What to Buy
Simple put, treacle is a slightly caramelized sugar syrup. There are different types of treacle, ranging in color and richness from light and mild to dark and bitter. What we Americans call molasses would be called black treacle at Hogwarts. Worth a mention, corn syrup is not a reliable substitute on the taste front.
I use a combination of molasses and golden treacle for this tart, in an effort to stick with a classic version. Lyle's Golden Syrup is a well-known brand of light treacle. Of course, you can order it online if it's out of stock at Honeydukes, or find it at an imported foods market.
As with any wonderful, original ingredient, there will always be imposters. You might find syrups labeled "treacle" or "golden syrup" by American producers. Be very wary and read the ingredients carefully. Many sneak in corn syrup, or even worse, the high fructose version. Confrigo!
The rest of the ingredients you likely have on hand if you bake often, aside from fresh ginger root, and almond flour if your tart will be gluten-free. Look for finely-ground almond flour for the best texture. Also, the gluten-free crust calls for a little tapioca or arrowroot flour, both offer similar levels of binding power.
The Technique
Treacle tart has two components - the short crust pastry and the filling - and both reward a little patience.
The crust is a sweet short pastry, meaning it contains sugar and bakes up crisp and slightly crumbly rather than flaky. The critical step is chilling. I recommend at least an hour in the refrigerator before rolling, but often let my crust chill overnight. Cold fat is what keeps the crust from shrinking aggressively in the pan. If you skip the chill, the crust will spread quickly in the oven, pulling back from the sides of the pan, even when filled with pie weights or beans.
The filling comes together quickly once the crust is blind baked. Bring the syrup and molasses just to a boil then pull it off the heat immediately. You want it hot enough to meld with the eggs and cream without risking a curdle or a scramble. Let it cool for five minutes before whisking in the egg mixture. Patience here prevents a filling that tastes faintly of scrambled eggs.
Classic vs. Gluten-Free
The classic recipe calls for all-purpose flour in the crust and traditional bread crumbs in the filling. Easy as well, pie. For a successful gluten-free pastry crust, you can use the specific brand I use, or any 1:1 gluten-free flour will do. The gluten-free version swaps in almond flour plus a little tapioca or arrowroot for the filling bread crumbs, and creates a different texture. The result is slightly nuttier with detectable texture - not as smooth as traditional. Not worse. Just different.
If gluten isn't an issue, make the classic. It's more forgiving and arguably more authentic. For celiac and gluten-intolerant muggles, the gluten-free version is just as magical, but requires a colder, more carefully handled crust. Chill it well, roll it between parchment with ample powdered sugar, and don't rush it.
Chef's Tips
On Rolling. Roll on parchment rather than a floured surface. Additional flour toughens short pastry. Powdered sugar works as a dusting agent if the dough is sticking and it dissolves into the crust without affecting the texture.
Blind bake. Bake the crust weighted down with beans or coins before adding the filling. Dock the bottom with a fork, line with parchment or even foil, and pour in dried beans, pie weights, or coins. Then bake until the edges just begin to color and the shine comes off the bottom. An inverted sheet pan underneath promotes even heat circulation and prevents a soggy base.
On bread crumbs. For a truly authentic tart you'd enjoy at Madam Puddifoot's, use toasted whole wheat bread crumbs for a classic tart. A slightly sweet version is the closest you'll get to British "brown bread", which is a slightly sweet wheat loaf.
On mixing. If you'd like to attack it Beauxbatons-style (AKA old-school French), mix your pastry ingredients by hand. Whisk together the flour, sugar and salt, rub in the butter until it's in small pieces, then knead in the egg beaten with water until the dough is a cohesive mass. If like me you are the proud owner of an old food processor that still gets it done, by all means... use it.
Repairing cracks. If you're crust tears during rolling or cracks during baking, a little Episkey! should repair it just fine. For those young muggles not of age, patch any holes with your fingers and a little more dough. Then simply bake it a few more minutes to set the raw patches.
Questions Worth Asking
Treacle and molasses are not the same, but close cousins. Both are byproducts of refining sugarcane or sugar beets, but differ in color, flavor, and sweetness depending on how far along in the refining process they were extracted.
In Britain, treacle comes in two forms. Light treacle, also called golden syrup, is pale, mild, and buttery sweet. Dark treacle is closer to Americans blackstrap molasses - a deep, slightly bitter, and intensely flavored. This recipe uses both for a balance of flavor.
If you can only find one or the other, golden syrup is the more important ingredient. Using all molasses will produce a darker, more bitter filling than intended. If golden syrup is unavailable, light corn syrup is a functional substitute - though as noted above, the traditional flavor of treacle will be lacking.
Jiggle it... just a little bit. Give the tart pan a gentle shake. The filling should move as one, like a set custard. If the center sloshes or looks liquid, it’s not ready. If it’s completely still, you’ve gone too far so remove it from the oven promptly.
The edges will set before the center - that’s expected. Pull it out when the middle has just a slight wobble, as residual heat will help it set completely as it cools. The surface will deepen a shade and lose that glossy, wet look. The crust should be a deep golden brown. If the crust is getting ahead of the filling, loosely tent the edges with foil. In sum: The clock is a guide. The jiggle is the answer.
Yes! It’s actually better the next day. The filling firms up overnight and the flavor settles in. This is one of those recipes that rewards patience. To make ahead, bake the tart completely and let it cool on a rack. Cover loosely with foil or plastic wrap and refrigerate. It holds well for up to three days. Always serve at room temeprature for the fullest flavor.
The crust can also be made even further in advance. The dough keeps in the refrigerator for two to three days or in the freezer for up to a month. You can blind bake it the day before and store the shell at room temperature, loosely covered. Fill and bake the day you plan to serve if you want it fresh out of the oven, but a fully baked tart reheats well enough that it’s rarely worth stressing over.
📖 Recipe
Treacle Tart Recipe
Journey to the magical world of Hogwarts by way of this classic, British dessert. This recipe makes enough for an 11" tart pan, if you use a smaller pan you will simply have extra dough and batter you could use to make mini tarts in a cupcake pan or mini tart pans. Classic and gluten-free versions included.
- Total Time: 2-4 hours, start to finish
- Yield: One 9"-11" tart 1x
Ingredients
Traditional Sweet Pastry Crust
- 1¾ cups of all-purpose flour
- ½ tsp of kosher salt
- ¼ cup of confectioner's sugar
- 5 ounces or 11 tablespoons unsalted butter, cut into small cubes
- 1 egg, lightly beaten
Gluten-free Sweet Pastry Crust
- 1¼ cups Bob's Red Mill all-purpose gluten-free flour*
- ¼ teaspoon xanthan gum*
- ¼ cup of confectioner's sugar
- ½ teaspoon of kosher or flake salt
- 1 large egg beaten with one tablespoon of water
Treacle Tart Filling
- 1½ cups of Lyle's cane syrup or other golden cane syrup
- 1 tablespoon of molasses
- ½ tsp of kosher salt
- ¼ cup of heavy cream
- 3 large eggs
- ¾ teaspoon of ground ginger
- 1 teaspoon of vanilla extract
- 1 cup of toasted whole wheat bread crumbs OR 1 cup of almond flour+ ¼ cup tapioca or arrowroot flour (gluten free)
Instructions
Prepare + chill crust
By hand: Whisk flour, salt and confectioner's sugar (and xanthan gum if gluten-free) in a large bowl. Using tips of fingers, rub butter in until it looks mostly like wet sand. Make a well in the middle, and pour in the beaten egg. Gradually work the egg into the flour until a moist dough forms, using the heel of your hand to distribute any remaining large pieces of butter. Shape into a flat disk and cover with plastic wrap. Refrigerate or freeze until firm throughout. This can be done 2-3 days ahead, or way in advance of the Yule Ball and frozen. Thaw until cold but soft before rolling.
In food processor: Processor flour, sugar, salt (and xanthan gum for gluten free) until combined. Add butter cubes, and pulse until large pieces are no longer visible. Add beaten egg, and pulse until dough comes together. Shape dough into flat disk, wrap tightly and chill for a couple hours, overnight, or freeze.
Roll + mold crust into pan
Between two pieces of parchment paper, roll out dough into circle a quarter of an inch thick, and at least an inch or two larger than your tart pan. Place dough in tart pan with a removable bottom, and press gently but firmly against the bottom and sides to secure dough. Trim any excess dough hanging over the edges. Place in refrigerator or freezer until chilled and firm throughout.
Dock + pre-bake crust
Preheat oven to 350° F. Dock the bottom of the crust with a fork, lay a large, crumpled piece of parchment on top (or use foil), and pour in pie weights (or a pound of dried beans or even spare coins). Bake for 25 minutes on an inverted sheet pan, until crust is a light golden brown.
Boil + mix treacle filling
- While the pastry crust bakes, toast almond meal or bread crumbs in large pan until fragrant and light brown, stirring to keep bottom layer from burning.
- In a small saucepan, combine syrup, molasses, and salt, and bring just to a boil. Remove from heat and cool for 5 minutes.
- Whisk together eggs, heavy cream, vanilla, and ginger.
- Whisk treacle mixture into egg mixture, then whisk in bread crumbs or almond meal.
Ready, set, bake!
- Take pastry crust out of oven and remove weights and parchment. Lower oven to 325° F.
- Place tart pan back in oven on top of sheet pan.
- Pour filling into crust. Bake for 30 to 40 minutes, or until filling is set in the center (when jiggled moves as one mass).
- Cool in the tart pan on a rack.
Notes
*You can use a 1:1 gluten-free flour blend, as well. If yours already contains xanthan gum, you can omit the amount listed.
- Prep Time: 30 minutes active
- Cook Time: About 1 hour
- Category: Sweets
- Method: Baking
- Cuisine: Harry Potter!
Ryan Rose
I'll admit. I've never heard of a Treacle Tart. But this looks excellent. 🙂
edibletimes
I only know them because of my obsession with Harry Potter... And turns out they're pretty tasty. Thanks for coming by!
apintoflife
Looks delicious, reminds me of tarte au sucre.
edibletimes
Thanks for coming by! The two tarts are definitely similar - and probably equally as tasty. Maybe I'll have to work on a tart au sucre now...
Sandra And Kathy's Corners
nice looking tart!! yum!!
Edible Times
Thanks! Happy eating!
Jeyna Grace
It looks good!
Edible Times
They're dangerous to have around, too. If you know what I mean...