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Serve warm as a main dish or as a side with grilled meats or fish.
Store leftovers covered in the fridge for up to 3 days. Reheat gently in the oven or microwave.
Variations:
Add grated cheese (like Gruyère or cheddar) on top before baking for a cheesier gratin.
Mix in cooked bacon or ham for extra flavor and protein.
Use cream instead of sour cream for a richer texture.
FAQ:
Q: Can I prepare this gratin in advance?
A: Yes, assemble the gratin and refrigerate it uncovered for up to a day before baking.
Q: How do I know when the gratin is done?
A: The top should be golden and the egg mixture set, not jiggly.
Q: Can I use frozen cauliflower?
A: Yes, just thaw and drain well before using.
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