Dessert

Vegan Potato and Onion Galette Recipe

Name: Vegan Potato and Onion Galette Recipe
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Cuisine: Vegan
Ingredients: 100g cold vegan butter; 300g spelt flour (Type 630); Salt, to taste; Ice-cold water, gradually added (approximately 5-7 tablespoons); 250g onions, sliced into rings; 1 tablespoon olive oil; 250g potatoes, thinly sliced; 125g vegan feta cheese; 2 sprigs fresh rosemary; Everything Bagel seasoning, to sprinkle; 5 tablespoons soy milk (optional, can be used for brushing crust)

ByLila Prescott March 30, 2026March 30, 2026

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Introduction

This vegan potato and onion galette is a rustic, savory tart perfect for a cozy meal or impressive appetizer. Made with a flaky spelt flour crust and layered with caramelized onions, thinly sliced potatoes, and vegan feta, it combines simple ingredients with rich, comforting flavors.

A sliced rustic galette tart is displayed on a wooden board with a slice being lifted by a silver pie server. The galette features a thick, golden brown crust with visible herbs and seeds on the edge, folded naturally around a filling of thinly sliced pears arranged in a circular layered pattern. The pear slices have a caramelized, slightly glossy surface with hints of cinnamon or spices and black pepper sprinkled on top. Surrounding the wooden board is a white marbled texture surface with a sprig of fresh rosemary and a glass of amber-colored drink blurred softly in the background. Photo taken with an iphone --ar 4:5 --v 7

Ingredients

100g cold vegan butter
300g spelt flour (Type 630)

5 tablespoons soy milk
250g onions

250g potatoes
1 tablespoon olive oil

125g vegan feta cheese
2 sprigs rosemary
Everything Bagel seasoning

Salt (to taste)
Ice-cold water (as needed for dough)

Instructions

Step 1: Prepare the dough by mixing cold vegan butter, spelt flour, and a pinch of salt in a bowl. Gradually add ice-cold water and knead until the dough is smooth. Wrap it in plastic wrap and chill in the fridge for at least 30 minutes.

Step 2: Slice the onions into rings. Heat olive oil in a pan over low heat and caramelize the onions for about 15 minutes, stirring occasionally to prevent burning. Meanwhile, thinly slice the potatoes.
Step 3: Preheat the oven to 180°C (350°F). On a floured surface, roll out the chilled dough into a circle and transfer it to a baking sheet.
Step 4: Spread the caramelized onions evenly over the dough, then layer the raw potato slices on top. Sprinkle with Everything Bagel seasoning and scatter the rosemary leaves. Fold the dough edges over the filling, leaving the center exposed.

Step 5: Crumble the vegan feta cheese over the galette. Bake in the preheated oven for about 40 minutes, or until the crust is golden brown and potatoes are tender. Let cool slightly before serving.

Tips & Variations

For extra flavor, add a sprinkle of smoked paprika or garlic powder to the caramelized onions before layering.
Use a mandoline to slice potatoes evenly for uniform cooking.

Substitute rosemary with thyme or sage for a different herbal note.
If you prefer a crispier crust, bake the rolled-out dough for 5 minutes before adding the toppings.

Storage

Store any leftovers in an airtight container in the refrigerator for up to 3 days. Reheat slices gently in a low oven or toaster oven to maintain the crispness of the crust. Avoid microwaving to keep the galette from becoming soggy.

How to Serve

The image shows a rustic galette on a wooden board with a slice cut and slightly pulled out. The galette has a golden brown, flaky crust folded over the edges, holding a single visible layer of thinly sliced apples arranged in a circular overlapping pattern, each apple slice caramelized with a shiny, glistening glaze and sprinkled with small dark seeds or spices. A small sprig of green rosemary lies nearby, and blurred glass jars and ingredients are in the soft-focused background. The entire scene rests on a white marbled textured surface. Photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use regular wheat flour instead of spelt flour?

Yes, regular all-purpose wheat flour can be used as a substitute, though the texture may be slightly denser. Adjust the water as needed to achieve a smooth dough.

Is this galette suitable for gluten-free diets?

This recipe as written is not gluten-free due to the spelt flour. To make it gluten-free, use a gluten-free flour blend designed for baking and adjust the liquid content accordingly.