A spelt caramelised onion and apple galette is a free-form tart built on a folded spelt crust. Slow-cooked onions go sweet and jammy, and thin apple slices roast on top until soft at the edges. The dough bakes at 200 C / 390 F until deep golden brown, about 40 to 45 minutes.
Spelt flour gives the crust a light, nutty bite. It’s lower in gluten than plain flour, so the dough stays tender and short rather than tough.
Caramelising the onions takes patience, about 35 minutes over low heat, but the payoff is a deep, sweet base that balances the apple’s tartness and a scattering of soft cheese.
You can make the dough and caramelise the onions a day ahead. Assemble and bake the galette fresh so the crust stays crisp, not soggy.
Why You’ll Love This Recipe
- Uses one bowl and one skillet, minimal cleanup
- Caramelised onions add deep, sweet flavour without extra sugar
- Spelt crust stays short and tender, not tough
- Dough and onions can be made a day ahead

Ingredient Notes
- spelt flour: Whole grain spelt flour gives the crust a nutty flavour and tender crumb. Swap in half plain flour if the dough feels too crumbly to roll.
- cold butter: Keep the butter cold and cubed so the pastry stays flaky. Frozen butter grated on a box grater works well too.
- onions: Yellow onions caramelise sweetest, but red onions work and add a slight tang. Slice thin and even so they cook at the same rate.
- apples: A firm, slightly tart apple such as Braeburn or Granny Smith holds its shape best during baking. Very soft apples turn mushy.
- goat cheese: Soft goat cheese melts into pockets through the filling. Gruyere or a mild cheddar works as a substitute with a sharper finish.
- egg wash: A beaten egg brushed on the folded edge gives the crust its shine and deep colour. Milk works as a lighter substitute.
- honey: A light drizzle of honey after baking rounds out the savoury filling. Leave it out if you prefer a fully savoury tart.

Rustic Spelt Galette with Caramelised Onion and Apple
Description
Spelt caramelised onion and apple galette layers deeply cooked onions and thin apple slices over a short, nutty spelt crust that holds its shape without turning soggy.
Ingredients
Spelt Pastry
Caramelised Onions
Topping
Instructions
Make the spelt pastry
- Whisk the spelt flour and salt in a large mixing bowl. Add the cold cubed butter and rub in with your fingertips until the mixture looks like coarse breadcrumbs with some pea-sized lumps.
- Add the ice water a tablespoon at a time, mixing with a fork, until the dough just comes together. Turn onto a lightly floured surface, pat into a disk, wrap, and chill for 30 minutes.
Caramelise the onions
- Melt the butter in a 30 cm / 12-inch skillet over medium-low heat. Add the sliced onions and salt, stirring to coat.
- Cook the onions for 30 to 35 minutes, stirring every few minutes, until deep golden brown and jammy. Lower the heat if they start to catch.
- Stir in the brown sugar and vinegar, cook for 2 more minutes until glossy. Remove from the heat and let cool slightly.
Assemble and bake the galette
- Heat the oven to 200 C / 390 F. Line a sheet pan 33 x 46 cm / 13 x 18 inch with parchment.
- Roll the chilled dough between two sheets of parchment into a rough 30 cm / 12-inch circle, about 3 to 4 mm thick. Transfer to the sheet pan.
- Spread the caramelised onions over the dough, leaving a 5 cm / 2-inch border. Scatter the cheese, then arrange the apple slices in overlapping layers on top. Sprinkle with thyme and black pepper.
- Fold the pastry border over the filling, pleating as you go. Brush the folded edge with the beaten egg.
- Bake for 40 to 45 minutes until the crust is deep golden brown and the apples are tender at the edges.
- Cool on the pan for 10 minutes, drizzle with honey, then slice and serve.
Nutrition Facts
Servings 6
- Amount Per Serving
- Calories 451kcal
- % Daily Value *
- Total Fat 30g47%
- Saturated Fat 17g85%
- Cholesterol 70mg24%
- Sodium 380mg16%
- Potassium 300mg9%
- Total Carbohydrate 48g16%
- Dietary Fiber 4g16%
- Sugars 10g
- Protein 9g18%
- Vitamin A 900 IU
- Vitamin C 4 mg
- Calcium 120 mg
- Iron 2 mg
- Vitamin D 20 IU
- Vitamin E 1.5 mg
- Vitamin K 5 mcg
- Thiamin 0.2 mg
- Riboflavin 0.2 mg
- Niacin 3 mg
- Vitamin B6 0.2 mg
- Folate 30 mcg
- Vitamin B12 0.3 mcg
- Phosphorus 150 mg
- Magnesium 30 mg
- Zinc 1 mg
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.
Note
Additional Notes
- Slice onions evenly so they caramelise at the same rate.
- Chill dough at least 30 minutes before rolling for a flaky crust.
- Pat apple slices dry to avoid a soggy base.
- Cool caramelised onions before spreading over the dough.
