Cheddar, Spinach, and Caramelized Onion Tart
A toss-up between a quiche and a savory tart, this cheddar, spinach, and caramelized onion tart is perfect for brunch, lunch, dinner, or whatever meal you care to serve it for! Serve alongside a light salad or a bed of roasted vegetables to make it a complete meal.
Yield: 8 servings
For the shortcrust pastry
  • 2¼ cups all purpose flour
  • 10½ tbsp cold butter, cubed
  • 2 large egg yolks
  • pinch of salt
For the filling
  • 2 tbsp butter
  • 1 lb onions, peeled and thinly sliced
  • 6 garlic cloves, thinly slicd
  • 1 lb spinach
  • 2 large eggs + 3 large egg yolks
  • 1½ cups heavy cream
  • 2 tsp English mustard
  • 5 oz mature cheddar, grated
  1. For the pastry, combine the flour, butter, and salt in the bowl of a food processor and pulse until it forms coarse breadcrumbs. Add in the egg yolks and 3-4 tbsp of ice cold water, adding the water a tablespoon at a time until the mixture comes together. Remove from the processor and pat the dough into a thick disc. Wrap in plastic wrap and chill for at least 30 minutes in the fridge.
  2. Meanwhile, melt the butter for the filling in a large, heavy-bottomed pot and add the onions and garlic to the pot along with a little salt. Cook until slightly golden, about 5-7 minutes, then add a splash of water and cover. Allow to sweat over low heat for 30 minutes, stirring every 10 minutes. Remove the cover and allow to cook until any excess liquid evaporates, another few minutes.
  3. For the spinach, cook it in a covered pot with a splash of water just to steam it until wilted. Place in a strainer to drain and cool.
  4. Heat oven to 350F.
  5. Roll out the chilled pastry dough to a 13-inch round and line a 10- or 11-inch deep dish pie or tart plate with it. Place back in the fridge and chill for another 20 minutes.
  6. Once chilled, line the pie with parchment paper and fill with baking beans or pie weights. Bake for 15 minutes, then remove the parchment and beans and bake for another 7-10 minutes, or until golden. Remove from the oven and allow to cool while you prepare the rest of the filling.
  7. Once the spinach is cool, squeeze the excess moisture out of it using a clean kitchen towel. Roughly chop it and add it to the onions. Season to taste with salt and black pepper.
  8. In a separate bowl, whisk together the eggs, yolks, heavy cream, and mustard. Season with salt and black pepper.
  9. Spread the onion/spinach mixture over the tart crust. Sprinkle the grated cheese over it and then pour in the egg mixture.
  10. Bake for 30 minutes, or until set in the middle and starting to brown. Allow to cool for 10 minutes before serving.
Recipe from How To Eat A Peach
Recipe by Joanne Eats Well With Others at