Cheesy Crescent Zucchini Quiche

This zucchini quiche is the kind of summer-garden recipe that earns its keep when the zucchini plants start producing faster than you can eat them. The crust shortcut here is brilliant: pop a can of crescent roll dough, press it into a pie pan, and you’ve got a flaky base in 30 seconds. No rolling, no chilling, no fuss.

Sauteing the zucchini and onion in balsamic vinegar is the move that lifts this above standard veggie quiche. The vinegar reduces and caramelizes the zucchini, drawing out water and replacing it with a tangy-sweet flavor that disappears entirely once baked but leaves real depth behind. Most zucchini quiches end up watery; this technique solves that.

Using liquid egg substitute keeps it lighter without losing the custard structure, and shredded mozzarella melts into the egg base for that pull-apart cheesy bite. Press the crescent dough firmly into the corners and up the sides of the pie pan, sealing any seams with your fingers. Gaps will leak custard and turn the bottom soggy.

Pro Tips

• Slice the zucchini thin (about ⅛ inch). Thick slices stay watery and make the quiche soggy.
• Bake on the bottom rack to crisp the crescent crust before the custard sets.
• Let the quiche rest 10 minutes before slicing or the custard runs.

Variations

• Swap mozzarella for sharp cheddar or crumbled feta for a different flavor profile.
• Use real eggs (5 large eggs to replace the 2 cups of substitute) for a richer custard.
• Add a layer of cooked, crumbled bacon or Italian sausage for a meatier weeknight version.