Brunch & Breakfast BRUNCH

Mushroom Gruyere Quiche

Name: Mushroom Gruyere Quiche
Prep time: 20 min
Cook time: 45 min
Total time: 1 h 5 min
Yield: 8 servings
Cuisine: French
Ingredients: 1 shortcrust case, blind-baked; 300 g mushrooms, sliced; 1 tbsp butter; 3 eggs; 200 ml cream; 80 g gruyere, grated; 1 tsp thyme; Salt and pepper

Blind-bake the shell or the base goes soggy under the custard — a tray of beans for 12 minutes does it..

By Dana Reyes

Published 23 Sep 2026 · Tested 2 times · 0 comments

Mushroom Gruyere Quiche — A gentle oven sets the custard to a tremble, not a rubber.

20 min

Prep time

45 min

Cook time

Serves

4.7

NEW

The make-ahead brunch centrepiece

Blind-bake the shell or the base goes soggy under the custard — a tray of beans for 12 minutes does it.

Brown the mushrooms hard so they give up water and concentrate; steamed mushrooms weep into the filling.

We tested gruyere and cheddar. Gruyere melts cleaner and tastes of the Alps; cheddar is the budget backup.

Instructions

About 65 min from start to finish

Heat the oven to 180°C / 350°F. Brown the mushrooms in butter; season and cool.

Whisk the eggs, cream, half the cheese and thyme; season.

Scatter the mushrooms in the case, pour the custard, top with the rest of the cheese.

Bake 35-40 minutes until just set with a slight wobble; cool before slicing.

Testing notes & substitutions

Three rounds of testing turned up three things worth knowing before you start cooking.

No blind bake?

The base will be soft; worth the 12 minutes for a clean slice.

Different cheese

Comte or emmental sit close to gruyere.

Questions we get a lot

Make ahead?

Bakes the day before and eats at room temp or warmed.

Custard split?

Too hot an oven; drop the temperature next time.

Dana Reyes

Dana has cooked professionally for eleven years and has been testing recipes for Hearth & Thyme since 2019. She writes about weeknight cooking, slow breads, and the small techniques that quietly change a dish. Every recipe she publishes is cooked at least twice, in an ordinary home oven.