Bacon Onion Tart

Dough 1. In a large bowl, combine the flour and butter until crumbly. 2. Add the egg and water, and mix until a dough forms. 3. Wrap the dough in plastic wrap and refrigerate for 30 minutes.

Filling 1. In a skillet, cook the bacon until crispy. Remove from skillet and drain on paper towels. 2. In the same skillet with the bacon fat, cook the onions until caramelized. 3. Preheat the oven to 180°C (350°F). 4. In a mixing bowl, whisk together the sour cream, eggs, salt, and pepper. 5. Crumble the bacon and add it to the sour cream mixture. 6. Spread the caramelized onions evenly over the tart dough. 7. Pour the bacon and sour cream mixture over the onions. 8. Bake for about 30-35 minutes, or until the tart is set and golden brown.