Caramelized Onion Tart

Sweet onion Tart

A KosherEye Signature Recipe -  inspired by the yearly harvest of Georgia's sweet Vidalia onions 

We present a lovely, simple to make dish which is particularly sensational in spring and summer.  Caramelized onions are sweet and make a luscious filling for a savory tart.  A mandoline slicer, or a sharp serrated knife are a must to create this fabulous dish. And, we promise, even those who are onion-averse will enjoy this sweet, rich onion tart. And, if you cannot find Vidalia's (a Georgia fave) any sweet onions will do!


9” Pie-crust, home-made or store bought (We use Wholly Wholesome)
6 sweet onions such as Vidalia (any sweet yellow onion can be substituted)
5 tablespoons olive oil 
1-teaspoon sugar (optional)

3 eggs beaten
1/2 cup mayonnaise
1 tablespoon dried onion soup mix
1/2-teaspoon black pepper
Optional:  1/2 teaspoon of either dried sage or dried thyme
Optional topping: 1 thinly sliced tomato


Preheat oven to 350 degrees.
If using a frozen pie shell, pre-bake for 8 minutes at 350 degrees to ensure a crispy crust.
With a mandoline slicer or a sharp serrated knife, slice onions into thin rings.


Warm olive oil in a large non-stick fry pan. Add onions, and sauté over low flame for 30-40 minutes or until onions are golden (caramelized). Turn onions with wooden spoon or spatula every few minutes. If desired, after 10 minutes of cooking, add sugar for extra sweetness. Continue cooking uncovered, until onions are golden.
Whisk together eggs, mayonnaise, onion soup mix, pepper and desired additional seasonings such as sage or thyme.
Cool caramelized onions slightly and gently combine with filling mixture. Ladle entire mixture into pie crust. 
Optional: before baking top pie with one thinly sliced tomato. Bake until set, about 30–35 minutes; Serve warm or at room temperature, not hot.


Yield: Serves 8 as a side dish or appetizer
One more delicious option: Add 4 ounces of fresh chopped Swiss cheese to filling batter mixture before baking.
Recipes: Appetizers, Onion Tart, Parve or Dairy, Kosher

Print   Email