Each single yr I discover a option to outdo myself at Thanksgiving. Whereas I completely admire all the classics – particularly my mother-in-law’s heavenly mashed potatoes – I additionally take nice pleasure in placing one thing new and totally different on the desk. See for your self in my final !

This beautiful mushroom and brussels sprouts au gratin is an upgraded model of the everyone knows and love. It’s bought all of the issues: brussels sprouts that soften in your mouth, toasty thyme-infused buttery mushrooms, and a next-level “fried” onion and walnut topping.

Sure, it’s going to be a showstopper in your Thanksgiving desk, however don’t anticipate Thanksgiving to attempt it! It will be an excellent pairing together with your Sunday evening roasted rooster. My gosh, you’re going to like it! Byeeeee inexperienced beans.

Components on this mushroom and brussels sprouts au gratin

Tender brussels sprouts, savory mushrooms, crispy onions, and a creamy parmesan-gruyere cheese sauce — this au gratin recipe is mindblowly scrumptious. We’re skipping the cream of mushroom soup right here, individuals! Right here’s what you’ll have to make it:

• Veggies: you’ll want contemporary brussels sprouts, yellow onions, and child bella mushrooms for this au gratin recipe.
• Butter: we’re including salted butter to cook dinner down the veggies and to begin the cheese sauce.
• For the crispy onions: you’ll be tossing the onions in a mix of , parmesan cheese, chopped (the important thing for additional crunch!), , and salt.
• For the mushrooms: cook dinner down these beautiful mushrooms with butter, salt, pepper, contemporary thyme, , and garlic.
• For the sauce: the silky, savory sauce is made with butter, , low-sodium , milk, parmesan cheese, gruyere, salt & pepper.

Customise this brussels sprouts gratin

Sure, there are straightforward methods to make this au gratin your individual! Right here’s what I can advocate:

• Make it gluten-free. Merely use and a .
• Hold it vegetarian. Go for vegetable broth rather than the rooster broth.
• Select your cheese. I like the combo of parmesan and gruyere cheese, however you might additionally use cheddar, fontina, or a smoky gouda!
• Go nut free. I like the additional crispiness that chopped walnuts add to the crispy onions, however in case you’re nut free you possibly can merely add extra bread crumbs.

Searching for an additional savory kick?

If you happen to’re not serving vegetarians I recommend including cooked bacon or ham for additional scrumptious savory taste!

Tips on how to make this brussels sprouts and mushroom au gratin

1. Prep the brussels sprouts. Begin by blanching the brussels sprouts, then draining them and working them beneath very chilly water in order that they cease cooking.
2. Prep the onions. Prepare dinner the onions down in slightly butter, then toss them with panko bread crumbs, parmesan, walnuts, garlic powder, and salt.
3. Prepare dinner the mushrooms. Subsequent, cook dinner the mushrooms with butter in the identical skillet the onions have been in till they’re good and golden. Then stir within the thyme, pink pepper flakes, and garlic. Add them to the with the brussels sprouts.
4. Make the sauce. Soften butter in the identical skillet, whisk within the flour till a paste varieties, then slowly stream within the broth and milk and whisk till effectively mixed. Deliver the combination to a boil, then scale back to a simmer and let it thicken to a gravy texture. Take away it from the warmth and stir within the parmesan, gruyere, salt & pepper. Style and modify the seasonings.
5. Pour, prime & bake. Pour the cheese sauce into the pan with the brussels sprouts and mushrooms and stir to coat the whole lot. Evenly prime the pan with the onions, bake it up till golden brown and bubbly, and luxuriate in!

Make it forward of time

You possibly can simply make this brussels sprouts gratin forward to save lots of time throughout Thanksgiving. Right here’s what I like to recommend:

1. Put together the recipe as directed however don’t bake it. Wrap the casserole dish in foil and place it within the fridge as much as 2 days forward.
2. As soon as prepared, take away the foil and bake the au gratin till the onions are good and golden brown and the sauce is bubbly.
3. Serve instantly with all of your favourite Thanksgiving dishes!

Storing & reheating suggestions

• To retailer: merely retailer this broccoli cauliflower gratin within the fridge in particular person,  or cowl the complete pan and place it within the fridge. It should keep good for as much as 5 days.
• To reheat: reheat particular person parts within the microwave or place the pan again within the oven till heated by means of.

Extra Thanksgiving recipes you’ll love

Get all of my Thanksgiving recipes !

I hope you like this mushroom and brussels sprouts au gratin! If you happen to make it be sure you go away a remark and a score so I understand how you appreciated it. Get pleasure from, xo!