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.
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.
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
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.
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 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.
PrintSheet Pan Flank Steak with Onions and Asparagus
This simple yet flavorful Sheet Pan Flank Steak with Onions and Asparagus dinner is a paleo, Whole30 meal made in under 20 minutes.
- Prep Time: 5 minutes
- Cook Time: 7 minutes
- Total Time: 12 minutes
- Yield: 4-6 servings 1x
Ingredients
- 1 1/2 pound flank steak
- 2/3 cup olive oil
- 1/4 cup red wine vinegar
- 1/3 cup coconut aminos
- 1 teaspoon salt
- 2 teaspoons dried oregano
- 2 teaspoons onion powder
- 2 cloves crushed garlic
- 1 red onion
- 8 ounces asparagus spears
- salt
Instructions
- Combine the olive oil, red wine vinegar, coconut aminos, salt, dried oregano, onion powder, and garlic. Place the flank steak in a large sealable bag or flat container and the marinade then store in the refrigerator and marinate all day or overnight
- Adjust an oven rack to the top slot, roughly 6 inches from the ceiling of the oven, then turn oven to broil (on high if oven settings are customizable, roughly 550 degrees)
- Place the baking sheet into the oven and let it heat for 5 minutes as the oven gets hot
- Slice the red onion thinly and separate the pieces and lightly coat (or spray) the asparagus with oil. Sprinkle with salt
- After the sheet pan is hot, remove from the oven and place the flank steak in the center, and arrange the asparagus and red onion in an even layer around the perimeter
- Place the sheet pan back into the oven and cook for 6 minutes for medium rare steak, 7-8 minutes for well done
- Remove the sheet pan from the oven, and transfer the steak to a plate or cutting board. Let sit for 5 minutes before slicing and serving with the roasted asparagus and onions
So good and so easy!!!
I’m so glad you liked it Megan!
I’m making this tomorrow – can’t wait!
Hope you loved it!
Question: if my family doesn’t like asparagus, is there another veggie that I can cook with this? Thanks! Trying this next week!
Hmmmm as long as it isn’t a hard root veggie (like carrots, sweet potatoes, etc). You’ll want something that will cook quick. Maybe try green beans!
Sounds easy enough and we LOVE asparagus.. Hubby might be mad he doesn’t get to grill something lol but we’ll give this a try. Thanks!
Haha I’ll be sure to post lots of grilling recipes this summer so he’s content 😉
Where do you buy your flank steak? I cant seem to find this cut of meat.
Most regular grocery stores will carry them! Ask the person working behind the meat section 🙂
I have made this 3 times in the last 8 weeks! Soooooo good!
You found a winner! So glad you like it Dana!
I loved this so much. The marinade was especially tasty. I love a medium rare steak, but mine was never quite done. I had to keep cutting off the medium rare ends and putting it back under the broiler to cook a bit longer. Some parts of the (mostly the middle) were way too rare. Can you suggest some tips…..I do not want to grill it. That’s my husband’s job too! Please let me know as I really do love this recipe! Thanks!
Sounds like your flank steak is quite varied in thickness. Next time try pounding the thickest part, so it’s more uniform for cooking and will yield a better result.
Oh wow – made this last night and I am kicking myself for not making this the first time you mentioned it on your IG stories a few weeks back!
Question – can you marinate the asparagus and onions with the meat? Or is the short cook time not enough to kill off any yuckies?
Also – I made this in my Breville Smart Oven – basically the most bada** toaster oven ever, and it was perfect.
I have always been intimidated broiling in my regular oven and I am soooo pleased it worked in the Breville – cause I will be making this weekly! Thanks for the yummy recipe!
Keep doing what you’re doing #supermom, I love following your life on IG 🙂
I’m making this for a family that’s going through a tough time and following Whole 30. It looks delish! Do you think this would cook ok on a disposable cooking pan? I want to make clean up easy on them and don’t want them to have to return my pan. Love following you on Instagram! Keep up the awesome work!
Made this for my husbands lunches this week. I didn’t have asparagus and red onion so I used snap peas, red pepper and pearl onions for the veggies. It was so good I had to keep myself from eating it all! Thanks for posting!
Looks fabulous! Question: When I put the sheet pan back in the oven, does it go back to the top rack (6 inches from top) or just the middle rack?
6 minutes on one side??
I don’t see the nutrition information for this meal, and would love you to post it! My steak is currently marinating for tonight’s dinner. Thanks for sharing this recipe!
This recipe was so so easy and delicious. 10/10 would recommend and will definitely be making again in the near future.