This Onion Tart is made with bacon and a really big amount of onions! It tastes best lukewarm with a glass of wine or some freshly squeezed grape juice. A perfect fall appetizer or snack!
Print Recipe

Easy Onion Tart Recipe

This Onion Tart is made with bacon and a really big amount of onions! It tastes best lukewarm with a glass of wine or some freshly squeezed grape juice.
Prep Time40 mins
Cook Time30 mins
Total Time1 hr 10 mins
Course: Main Course
Servings: 20
Author: Julia

Ingredients

For the yeast dough:

  • 1 cup milk lukewarm (240ml)
  • 1 package instant dry yeast 2 and 1/4 tsp
  • 3 cups all-purpose flour (375g)
  • 1 tsp sugar
  • 1/2 tsp salt
  • 6 tbsp vegetable oil

For the onion topping:

  • 2 1/4 lbs yellow onions finely diced (1kg)
  • 5 slices thick cut bacon finely diced
  • 3/4 cup sour cream (180g)
  • 2 eggs
  • 1 tsp salt
  • 1 tsp caraway seeds

Instructions

  • Pour the lukewarm milk into the bowl of a stand mixer fitted with the dough hook attachment. Dissolve the yeast in the lukewarm (90°F) milk. Cover and let sit until the yeast is foamy, about 5 to 10 minutes.
  • On low speed, add the flour, sugar, vegetable oil, and salt and knead until a soft dough forms about 5 minutes. Transfer the dough to a lightly floured surface and knead with your hands for one more minute. Sprinkle the dough with a little bit more flour if it's too sticky.
  • Transfer the dough to a lightly greased bowl, cover and let the dough rest at a warm place for 40 minutes or until about doubled in size.
  • In the meantime make the onion topping: Fry up the diced bacon. When the bacon is done add the diced onions to it. Reduce the heat to medium-low and let the onions slowly caramelize to a nice golden brown, about 10-20 minutes. Remove from heat and allow the mixture to cool for a few minutes.
  • In a bowl, combine sour cream, eggs, salt and caraway seeds. Add the onion mixture to it and thoroughly combine everything.
  • Grease a 18x13-inch baking sheet or use parchment paper. With floured hands spread the dough evenly about 0.2 to 0.4 inch high.
  • Spread the onion mixture on top of it and sprinkle a few caraway seeds on top. Preheat the oven to 390F (200C) and let the onion tart rise a second time while the oven is preheating.
  • Place the Onion Tart on the middle shelf in the oven and bake for 25-30 minutes, until the top is light brown. Let cool for a few minutes before serving. This tart tastes best lukewarm.