French Onion Grilled Cheese
Slow-caramelized onions, Gruyère, and cheddar on Parmesan-crusted sourdough.
- Serves
- 1
Not rated
Ingredients
- 2large onions, thinly sliced
- Gruyère, two thin slices
- cheddar, two thin slices
- Parmesan, finely grated; you won't need much
- good bread, homemade sourdough; two thick slices
- butter
- olive oil
- salt
Method
Step 1: Caramelize the onions: add to a pan with a few tbsp of butter and olive oil and some salt. Stir every few minutes over medium-low heat. This should take a while if you do it right. Don't rush it!
Step 2: Cut two thick slices of bread and two thin slices each of Gruyère and cheddar. Butter the outside of the bread, then coat with Parmesan.
Step 3: Lightly oil a pan over medium-low heat. Add the bread Parmesan-side down and immediately spread the Gruyère and cheddar over both halves. Add the onions. Cook until the cheese melts and the crust is nicely browned. Go slow; don't burn it!
Step 4: Combine the halves and REST ON A WIRE RACK FOR TWO MINUTES. This is crucial: it steams a lot when it comes off the pan, and on a plate you'll get a soggy grilled cheese.
Version 1 · updated November 15, 2026