Making the Onion Cottage Cheese Tart is simple when you follow these steps:

1. Make the Crust: In a mixing bowl, combine the flour and salt. Add chilled butter and mix until the mixture resembles coarse crumbs. Gradually add cold water, one tablespoon at a time, until the dough forms. Gather into a ball, wrap in plastic, and chill for 30 minutes.
2. Preheat Your Oven: Set your oven to 375°F (190°C) to preheat while you prepare the filling.
3. Cook the Onions: In a skillet, heat olive oil over medium heat. Add sliced onions and sauté until translucent and lightly caramelized, about 10-15 minutes. Set aside to cool.
4. Prepare the Filling: In a large bowl, combine cottage cheese, eggs, grated cheese, sautéed onions, and season with salt and pepper. Stir until well mixed.
5. Roll Out the Dough: On a floured surface, roll out the chilled dough to fit your tart pan. Gently press the dough into the pan and trim excess.
6. Pour Filling into the Crust: Carefully pour the cottage cheese mixture into the prepared crust, spreading evenly.
7. Bake the Tart: Place the tart in the preheated oven and bake for 35-40 minutes, or until the filling is set and the crust is golden brown.
8. Cool and Garnish: Allow the tart to cool for a few minutes. Garnish with fresh herbs before slicing.
9. Serve: Slice the tart into wedges and serve warm or at room temperature.

By following these instructions, you’ll create a delicious Onion Cottage Cheese Tart that everyone will rave about.