Sweet Onion Galette

Sweet onion galette

Onions are usually in savory dishes, but did you know they are incredibly sweet? In this galette, we slow cook the onions to bring out its sweetness. This is like onion soup in a pastry! Double this recipe to make more, because these tasties go fast!



cup (72g) all-purpose flour
¼ tsp (2g) salt
½ tbsp (6g) sugar
¼ cup (56g) butter
cup (30g) water, ice cold

Onion Filling

4 (540g) onion, sliced 3 minutes
¼ cup (56g) butter
2 sprigs (4g) thyme
¼ tsp (2g) salt
¼ tsp (2g) black pepper, freshly ground


  1. Grease your slow cooker with butter and melt the remaining butter on low heat. 1 minute
  2. Add the onions, thyme, salt, and black pepper in the slow cooker and cook on low heat for at least 8 hours. I like to do this overnight and wake up to the sweet scent of caramelized onions. 1 minute
  3. In an electric mixer, add all the flour and turn on low speed. Cube the butter and add the butter, sugar, and salt to the flour. Mix until the flour and butter is thoroughly mixed and it looks like loose crumbles. 3 minutes
  4. Add the ice cold water and mix until the dough comes together. Do not mix too much; you don't want to form gluten. 1 minute
  5. Transfer into a plastic bag or wrap with plastic and chill for at least 1 hours in the refrigerator. You can make a day ahead when you started slow cooking the onions. 1 minute
  6. When you are ready to bake, preheat the oven to 400F degrees. 1 minute
  7. Take the dough out of the fridge and roll out into a 10" circle on a sheet of foil. The circle does not have to perfect and the edges can fray. 3 minutes
  8. Pile the onion filling in the center of the dough and spread an even layer stopping about 2" from the edge. Bring the edges over the sides of the filling. Fold the edges when necessary to make a circular shape. 1 minute
  9. Transfer the foil with galette on top to a baking pan. Bake for 20-30 minutes until the sides are golden brown and the bottom is crispy. 30 minutes
  10. Serve immediately while hot!
Sweet onion galette ndata