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Grandma Bell's Onion Tart

(22 Votes)
1 Hr

If you're looking for a change-of-pace from traditional Christmas sides, then you'll love Grandma Bell's Onion Tart! It's one of Howard's favorite recipes for the holidays. This savory onion casserole practically melts in your mouth, and unlike the traditional Christmas sides, there probably won't be any leftovers the next day! 

What You'll Need

  • 1 refrigerated rolled pie crust (from a 14.1-ounce package)
  • 3 tablespoons butter
  • 3 sweet onions, thinly sliced
  • 2 eggs
  • 1 cup sour cream
  • 1/2 teaspoon dry mustard
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1/4 teaspoon paprika

What to Do

  1. Preheat oven to 450 degrees F. Unroll pie crust and place in a 9-inch pie plate and flute edges. Bake 8 to 10 minutes or until light golden; set aside. Reduce oven heat to 350 degrees F.
  2. Meanwhile, in a medium skillet over high heat, melt butter. Add onions and saute 5 minutes. Reduce heat to medium-low, cover, and sauté 4 additional minutes, or until tender. Place onions in pie crust.
  3. In a medium bowl, whisk eggs, sour cream, dry mustard, salt, and pepper; mix well and pour over onions. Sprinkle with paprika.
  4. Bake 40 to 45 minutes or until a wooden toothpick inserted in center comes out clean and crust is golden. Let rest 10 minutes before cutting into wedges and serving.

Test Kitchen Tips

Nutritional InformationShow More

Servings Per Recipe: 6

  • Amount Per Serving % Daily Value *
  • Calories 284
  • Calories from Fat 193
  • Total Fat 21g 33 %
  • Saturated Fat 11g 54 %
  • Trans Fat 0.2g 0 %
  • Protein 5.5g 11 %
  • Amount Per Serving % Daily Value *
  • Cholesterol 104mg 35 %
  • Sodium 382mg 16 %
  • Total Carbohydrates 19g 6 %
  • Dietary Fiber 1.7g 7 %
  • Sugars 4.6g 0 %

Ratings & Comments

My Rating:  

I have not made this yet so I cannot rate it.

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Dear Test Kitchen Team --This looks and sounds tasty. I was wondering -- can it be made without a crust??

This is very similar to my old Asatian Onion Tart recipe 5 cups very thinly sliced onion sweated in 4 tbs butter (melt butter in deep sauce pan add onions cover tightly cook on low 15 minutes - the onions will be softened and a bit creamy), In the bottom of a deep dish unbaked pastry shell scatter 1/3 to 1/2 cup grated Swiss cheese, then top with the prepared onions, reserving the butter. In a bowl beat 3 or 4 eggs, the butter from the onions, salt, pepper and thyme with 1 cup cream or creme fraiche (the amount of egg varies only because there is some variation in the deepness of deep dish pie pans). Bake at 350 for about 45 minutes (i.e. just like the recipe above). Creme fraiche is uncommon here in the US but is in some ways similar to sour cream. The cheese add an extra dimension of flavor, as does the thyme. I have substituted 3 ounces of cream cheese that I melted into enough skim milk to make a cup when I have been out of needed ingredients (no cheese or cream) - it gives a different flavor, but it is still very good. I have also used this as the template for other vegetable pies - thawed drained chopped broccoli works well, so does blanched cut up asparagus spears. Vegetable egg pies are warm welcoming in the cold months, and a light meal when served at rooom temperature with sliced tomatoes or cucumber salad in the summer.

That sounds wonderful! Thanks for sharing.

I plan to make this in a 9x13 cake pan and double it; I will take it to our church potluck. Any suggestions regarding ingredients ... add more of this ... or ... reduce some of this? Thanks!

I would think the recipe as is would be fine for a 9x13 pan. The filling would not be as thick but with so many food varieties at potluck meals feel that would be ok. Your baking time would have to be adjusted, less time. Good luck and enjoy.

Great recipe! This is definitely a keeper!

Wonderful recipe. I am always searching for ways to cut fat and calories so I used egg eaters, and fat free sour cream. I just love this tart and will make it on a regular basis. Next time I shall add some low fat swiss cheese as I think it will be really great. Great recipes for a vegetarian. Thanks Mr. Food!

Loved this recipe.! Didn't know about it until I told my son and he said when he was stationed in Germany he ate it and liked it.

If you like onions this is the rcipe to make!

Love this recipe. Substituted 4 oz of cream cheese for the sour cream and added a 1/2 can of french onion soup to the onions. Great taste.

What is DonP's recipe for Onion Tart?

My Onion Tart recipe has this one beat to H--L.

ok DonP what is your recipe

DonP is all wind and no fertilizer. He has no recipe either.

Love the recipe, want to try it, and wonder if silken tofu would make up for the eggs as the recipe, as written, is essentially a kind of custard. I would prefer to not use regular sour cream, too, but trying to adjust recipes to "vegan" is somewhat daunting to a new convert. Although Mr. Food has never been even close to vegan or vegetarian, or even terribly healthy, I appreciate some of his kitchen's shortcuts and used to really enjoy his television spots. No matter what, this recipe sounds easy and good and I intend to make it for non-vegans who will be in my home this holiday. Thank you bluedog94, I concur.

This sounds like something I will try very soon. Thanks.

We really enjoyed this recipe. I added to it though,instead of 3 tabsp butter, used 1 stick of butter, 3 oz soft cream cheese to the egg mixture, and shredded cheese b/4 pouring the sour cream mixture on top. REALLY TURNED OUT YUMMY!!!!!


Hey robrob, Why don't "u prepare it, cook it, eat it and THEN comment.

S48tal, I think you're charming and enjoy your input....'Hope your oven's fixed soon. (Maybe our fiend, robrob is just having a bad day....)

Comment to [robrob]...... sorry if my input wasn't satisfying to you; I was only making a (for sure observation) about the recipe as I was up late when it posted. Many of "Mr. Foods" recipe has comments I've left saying what I thought of (many tasty dishes) I've made from this site. And simple put, I was thanking "Mr. Foods Team," ..... acknowledging their 'tasty accomplishments.' When my 'oven' is fixed, you will be sure to see a comment on how 'tasty this recipe is.' Have a wonderful day, happy baking, and no hard feelings I hope. Sincerely, 'little ole' Ohio cook,' Sherry

Gee, robrob, take a chill pill! At least li'l ol' wasn't whining for nutritional values! Sherry! Hope your oven is fixed before Christmas!

"Mr. Food's Team," thank you again for continuing this wonderful 'recipe site' ........... just love it!!! This recipe looks lusious, and I'm flipping out, because my oven died on me! Have to get it fixed soon. I'm going through [withdrawl] without it! Love to bake and cook, and seeing this new recipe; well, I can hardly wait to try it! Looks easy and delicious. My husband, family and friends always love the recipes I make from your 'site.' Thank you again for all the wonderful recipes and ideas to make the work in my kitchen easier! Sincerely, 'little ole' Ohio cook,' Sherry

After u prepare it, cook it, eat it, then comment on it.

Reads to me like the poster was commenting on the site and commenting on anticpating making the tart.


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