Vegetarian Gruyere Aged Smoked Gouda Caramelized Onion Quiche is filled with aged smoked gouda, gruyere cheese, and caramelized onions.

I make a lot of varieties of quiche.

A lot.

I seem to make one almost every week.

Quiche is awesome because it is one of the great throw what I have left over in the fridge kind of meals.

Examples of this are my BBQ Pulled Pork Quiche.

They are also great because it’s something you can serve guest and almost everyone likes it.

Despite the saying…real men do eat quiche.

And they are great for vegetarians as well.

But my favorite really does tend to be just a simple cheese quiche.

Well, cheese and some caramelized onions.

As long as that cheese is really good cheese.

I used really good cheese in this Vegetarian Gruyere Aged Smoked Gouda Caramelized Onion Quiche recipe.

Gruyere is such a wonderful cheese with a great nutty quality.

The aged Gouda I used was Beemster cheese.

A few years back I did a sponsored post for Beemster and I have been obsessed with their gouda’s ever since.

Luckily, two of my grocery stores carry their cheeses.

If you can’t find Beemster then just use your favorite gouda.

But honestly, I would try and hunt down the Beemster.

Or at least an aged gouda somewhere.

Most grocery stores do carry it.

So good.

The caramelized onions compliment the cheeses.

As does the dijon brushed on the bottom of the quiche, so don’t skip those steps.

The mustard helps cut the richness of the quiche.

For those celebrating…have a wonderful Canadian Thanksgiving tomorrow.

P.S. It’s a great day to buy my cookbook Holy Sweet!

Want More Quiche Recipes?

For the onions:
Melt the butter in a large frying pan over medium-low heat until foaming.
Add the onions, and let them cook, stirring rarely, until they are deep golden brown and caramelized, about 45 minutes.
For the quiche:
Preheat the oven to 375 degrees F.
Line the pie crust with parchment paper and fill with pie weights or dried beans.
Bake until the crust is set, 12 to 14 minutes.
Remove the paper and weights and bake until golden brown, 8 to 10 minutes.
Remove from the oven and cool on a wire rack.
Leave the oven on.
Spread a layer of dijon mustard on the bottom of the prepared pie crust.
Arrange the caramelized onions on top of the mustard layer.
Then add both cheeses.
In a large bowl, beat the eggs, yolks, and cream.
Whisk until fully combined.
Add the salt and nutmeg and whisk to combine.
Pour into the prepared crust and bake until the custard is golden, puffed, and set yet still slightly wiggly in the center, 30 to 35 minutes