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1. Prepare the Onions:
Step 1: Heat the olive oil and butter in a large skillet over medium heat.
Step 2: Add the sliced onions to the skillet.
Step 3: Sprinkle the onions with sugar, salt, and pepper.
Step 1: Cook the onions, stirring occasionally, until they are golden brown and caramelized. This should take about 25-30 minutes.
Step 2: Remove the skillet from heat and let the onions cool slightly.
3. Prepare the Puff Pastry:
4. Assemble the Tart:
5. Bake the Tart:
6. Garnish and Serve:
Step 1: Sprinkle fresh thyme leaves over the tart for added flavor.
Step 2: Cut the tart into slices and serve warm.
Even Slicing: Ensure the onions are evenly sliced for uniform caramelization.
Patience: Caramelizing onions takes time, so be patient and let them cook slowly to bring out their natural sweetness.
Cheese Variation: Feel free to experiment with different cheeses, such as feta or cheddar, to suit your taste.
Conclusion