Gluten-Free Spinach and Caramelized Onion Quiche
Deeply browned onions, thyme and sharp cheddar make this quiche savory and comforting, with a crisp oat crust and tender spinach filling.
Fits Celiac, Pregnancy, Toddlers and 4 more diets
Plan your dinnersGluten checks every recipe for everyone at your table. Free.

Ingredients
- ½ cup gluten-free oat flour
- 2 tbsp olive oil
- 2 tbsp water
- 3 large eggs
- ½ cup lactose-free whole milk
- 100 g fresh spinach, roughly chopped
- 1 yellow onion, thinly sliced
- 40 g sharp cheddar cheese, grated
- ½ tsp dried thyme
- ½ tsp salt
- 0.125 tsp black pepper
Method
- Heat oven to 375°F; mix oat flour, oil, water, and half the salt.
- Press dough into a small baking dish and bake until lightly crisp.10 min timer
- Brown onion in a skillet until deeply golden; add spinach until wilted.
- Whisk eggs, milk, thyme, remaining salt, and pepper; fold in vegetables and cheddar.
- Pour filling into the crust and bake until puffed and firm.30 min timer
Cooking for more than one diet?
Add everyone you cook for, with their allergies, diets and ages. Gluten checks this recipe for each of them and tells you what to change for anyone who can’t eat it as written. It’s free to start.
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This recipe also fits: Pregnancy recipes, Toddlers recipes, High blood pressure recipes, Gluten-free recipes, Crohn’s and colitis recipes, Vegetarian recipes.


