Up your toast game with buttery, slow-roasted mushrooms spooned over crusty, toasty sourdough bread with melty fontina cheese! The perfect little bite for a weekend brunch or date night in.

I love date nights out, but I usually work from home on Fridays, so lately we’ve been enjoying date nights in to kick off the weekend. For last week’s date night in, I made us a Roasted Mushroom Tartine with Fontina Cheese; buttery, crusty, melty, and amazing. These fancy toasts were easy to make, and had so much flavor.

tips for slow-roasted mushrooms in the oven
I love to sauté fresh mushrooms, but if you’ve never roasted them, you don’t know what you’re missing; the flavor of roasted baby bellas tastes fancy but couldn’t be easier.
- I used ghee to roast my mushrooms, but you can use butter, or oil. I’d recommend avocado oil, or evoo that can be used in high temps.
- Fontina cheese melts so well with this tartine, but if you’d like to use blue cheese, mozz, gorgonzola, or even parmesan, those will all also work. You do you.
- I used fresh thyme, because roasted mushrooms feel like fall to me, and so does thyme. Sage or parsley would also be a great herb to use in this tartine recipe.
- Use any bread you like! I picked up a round loaf of whole wheat sourdough from my local Walmart’s bakery and sliced away. ANY bread will work, though.

roasted mushroom tartine with fontina cheese
Ingredients
- 1 lb baby bella mushrooms, cleaned and sliced
- 2 tablespoons ghee, melted - can also use unsalted butter, avocado oil or olive oil
- salt and pepper, to taste
- 6 sprigs fresh thyme, plus more for garnish
- 4 slices whole grain sourdough bread
- 4 teaspoons teaspoons ghee, or unsalted butter
- 4 slices Fontina cheese - may also use 1½ cup shredded cheese, if desired
Instructions
- Preheat the oven to 400F degrees.
- Clean and slice mushrooms. Line a baking sheet with parchment paper or foil, and arrange the sliced mushrooms on baking sheet. Drizzle ghee, and scatter the fresh thyme on top of the mushrooms. Toss to combine. Sprinkle with sea salt and pepper.
- Roast for 20 minutes. Remove from oven, give the mushrooms a stir, and roast another 10 minutes. Remove from oven, set aside.
- Spread ghee or unsalted butter onto each slice of sourdough, and toast for 1-2 minutes in oven.
- Remove the toast from the oven top with Fontina. Bake 2-3 minutes, until cheese has melted.
- Remove the baking sheet from the oven and top each piece of bread with a spoonful or two of the mushroom mixture. Garnish with fresh thyme, if desired and enjoy!
This Roasted Mushroom Tartine with Fontina Cheese is also a great recipe to make for weekend brunch with mimosas, or wine!

Looks amazing and taste great too! Thanks for the inspiration!
I have never roasted mushrooms before, but the next time I have them on hand, I will definitely try it. It looks mega delish!
Roasted mushrooms are such a game changer! They’re amazing!
Oh my goodness, my heart be still! I love mushrooms and cheese!!! This is an ideal appetizer recipe for this week’s backyard BBQ for my husband’s work.
This recipe sounds so delicious, my mouth is watering as I am reading, I will definitely have to try, thanks for sharing!
~xo Sheree
poshclassymom.com
Enjoy! xo
These is seriously making my mouth water. I would just LOVE to have one right now!
So much flavor in such a simple presentation! Sounds so savory and delicious.
Mushrooms and Fontina are the perfect marriage place it on crispy to die for toast oh I am game!! Can’t wait to make it!
Yessss, Leah! You get me (and this toast!)
This looks amazing! My husband and I definitely need to get back to doing more date nights – right there with you…it can be so hard to make the time on busy weeknights
Yum, that looks so tasty! I love mushrooms, but sadly, my partner does not… haha
This looks sooo good!!! And very easy to make.
Easy and tasty is the best combo, Gabi!
Oh ,my!! This looks absolutely divine!! Must make this weekend!
This recipe has all of my favorites — mushrooms, ghee, thyme, sourdough, and cheese! This looks delicious and would be a great appetizer for when I’m entertaining. Thanks for sharing.
Yes! An awesome app – hope you enjoy, Lauren!
This would definitely be a hit for date night or wine night with some girlfriends!