Sheet Pan Flank Steak with Onions and Asparagus

Dinner in under 20 minutes! This sheet pan flank steak with onions and asparagus is the perfect paleo and Whole30 dinner to make and serve with minimal effort. Tender steak with perfectly roasted veggies is a meal that will definitely be on rotation.

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Sheet Pan Flank Steak with Onions and Asparagus

It’s been SO long since I posted a sheet pan recipe. I don’t know what I was thinking – I LOVE sheet pan dinners but I somehow forgot about this little love affair my baking sheet and I had.

Plus I’ve been a little chicken about it because I typically only make sheet pan meals with chicken. And I can’t think of another chicken reference to tie this all together so let’s switch gears and talk about beef.

STEAK specifically.

Sheet Pan Flank Steak with Onions and Asparagus

It was some stroke of genius (or a psychological attempt to bust fears) that I attempted a flank steak recipe in the oven. Steak and I only play well together on the grill. Lies – steak and my husband play well together on the grill. HE is the steak grill master and proud of it. I let him have the glory and just enjoy a perfectly grilled steak, complimenting him on his mad skillz (but not too much, since I don’t want to give him a big ego about it…)

I’ve done flank steak in a crockpot. And I’ve seared skirt steak in a cast iron. But never, EVER have I attempted steak in the oven.

But now I’m MAD. I’m mad I haven’t done it before. And I don’t want you to be mad at yourself either, so that’s why I must share this sheet pan flank steak with onions & asparagus recipe. It’s a game changer folks. Life changer. Steak changer.

Sheet Pan Flank Steak with Onions and Asparagus

Sheet Pan Flank Steak with Onions and Asparagus

I can’t believe how perfect this big ‘ol hunk of meat came out. Cooked to perfection, juicy and flavorful, and the complimentary veggies were roasted to perfection. But the best part? Dinner in under 20 minutes (and if you are super efficient, you could probably bust it out in under 15).

NOT KIDDING. THIS IS NOT A DRILL.

No grill needed, no advanced culinary skillzzzz required. Just an oven and a sheet pan. Simple as that.

Marinating the flank steak all day packed it with major flavor, so much in fact, the asparagus needs no extra help. The marinated steak paired with the savory yet sweet sliced onions and PERFECTLY roasted asparagus is a beautiful combination for ‘yo taste buds. Aaaaand it’s paleo and Whole30 compliant.

Sheet Pan Flank Steak with Onions and Asparagus

This recipe is a must for big families or serving a crowd. Or if you have a husband like mine that eats like a small clydesdale.

They key is to set your oven to broil on high (mine hits around 550 degrees) and heat the pan before adding the steak and veggies. Then pop it back in the oven for 6 minutes (medium rare) or 7-8 for a well-done steak, then enjoy!

Sheet Pan Flank Steak with Onions and Asparagus

Sheet pan like this sheet pan flank steak with onions and asparagus meals your go-to? Then be sure to also make this Autumn Roasted Veggie Sheet Pan Chicken with Raisins, and this Sheet Pan Salmon with Dijon Cream Sauce.

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