It’s that Time Again!!! BBQ Time…
BBQ Flank Steak Onion Open-Faced Sandwiches
Let’s fire up the grill or better yet the broiler in your oven and make a yummy steak sandwich to help you and your family transition from spring into summer. BBQ Flank Steak Onion Open-Faced Sandwiches are the perfect recipe to ease you into spring!
- 1 ½ to 2 pounds of flank steak
- ¾ loaf of sliced French bread (1/2" thick)
- ¾ cup of BBQ sauce
- 2 tablespoons of season salt
- 1 Onion
- 4 tablespoons of butter
- 1 tablespoon of water
- Non-stick spray
- Prepare a non-stick sprayed pan to marinate flank steak.
- Place flank steak in prepared pan. Cover one side with ¼ cup of BBQ sauce and then shake 1 tablespoon of seasoned salt evenly over top. Flip steak over and repeat on other side.
- Cover pan and place in fridge. Allow steak to marinade for at least one hour. Steak may marinate for up to 24 hours to increase flavor.
- Begin to prepare onions and bread 15 minutes prior cooking steak. Prepare a skillet with a ½ tablespoon of butter and heat until melted. Place slice of French bread on top of melted butter and fry until lightly brown. Flip and repeat with all slices of bread. Make sure pan is nicely coated with butter while cooking.
- Once all bread is toasted, use the same pan to prepare onions in. Keep pan at a low heat with a butter layer while cutting onion into long pieces or into cubes. Place cut onion into pan with ½ tablespoon of butter, 1 tablespoon of water and ⅛ cup of BBQ sauce. Allow to simmer while steak is cooking.
- Ready a broiler pan by lining bottom with aluminum foil and spraying with non-stick spray. Heat broiler on your oven to the highest setting, or if this is not an option on your oven, turn the broiler on. If your oven does not have broiler settings, it may increase cook times.
- Remove steak from fridge, transfer to the broiler pan, and put in oven a few inches under the broiler. Cook for 6-8 minutes, flip over, and cook for another 6-8 minutes. Juices will appear on top of the steak, and the edges will be nicely crisp when flank steak is done. NOTE: Flank steak may also be grilled on high heat instead of broiling.
- Transfer the steak to a cutting board. Cut the steak diagonally into thin pieces by slicing against the grain of the steak.
- Place steak and onions on top of a slice toasted French bread. Drizzle remaining BBQ sauce over top of open-faced sandwiches.

Step 2-3 Marinating the Steak!
Some great seasoning salts that I recommend to try:
- Mixed Up Salt Canister $6.99
- $12.50
- Seasoned Salt $10.79
- Choose your own
Some great BBQ sauces that I just adore:
- (2 jars) $12.91
- $20.99
- (Pack of 4 assorted flavors) $23.50
- Choose your own
Step 8– The Cut Flank Steak. Make sure to cut diagonally against the grain of the steak
The perfect BBQ Flank Steak Onion Open-Faced Sandwiches prepare for a party of 5 or a crowd.
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Drool…… That looks so good. Thanks for the recipe.
Looks so good. Thanks for the seasoning and sauce recommendations. It’s great to try new sauces, especially if they are recommended. I haven’t tried the Stone Brewing Co suce before, but they sound good.
This is looking good love to try this
My guy would so love this! He’s a big meat lover. This looks pretty easy to make too,easy for me yummy for him it’s a win win
Looks so good! I pinned this for my husband. lol He likes to cook things like this. Thanks!
I did make these for the Super Bowl gathering (along with the party beans), and they were a hit! Thanks for providing me with my main menu items — I like to pick at the last minute so timing was perfect — made for a great gathering regardless of which side people were rooting for. Great job!
Hmm….good for the SuperBowl gathering this weekend! Although I started salivating already….if I had the ingredients in house, I’d make some right now.
This looks so good I’m going to try it tomorrow night for dinner.
BBQ is so flavorful and a great food to soak up the last bits of summer. There are so many options, too, when choosing a sauce from hot to mild to brown sugar, bourbon, honey, hickory…. Kansas City is known for their BBQ, and this looks like a winning recipe.
Sounds really good. Flank steak is such an easy steak to cook.
Thankyou for Sharing your Wonderful Recipe! I could actually Smell it cooking while I was reading the directions and ingredients. My Favorite BBQ Sauce is Baby Rays.. I have it on hand all the time just like Ketchup, mustard & Mayonaise.. I love French fries dunked in it and chicken too.. Anyhow I must try this recipe. I will pin it for myself!!
This is tasty looking.
Oh my gosh this sounds so good. At last I can have the onion I really like, but I can serve it without the onions. He just can’t digest onions. I also want to try some of the products you suggest.
Steak and onions. Yum!
It is BBQ and grilling time! We live in an area with a lot of barbecue, and it’s fun to go out and try all the different ones. They really can have different flavors. At home, it can be fun to try out different sauces. I haven’t tried Stone Brewing Company before. I will have to.
OH this makes me hungry. What a great recipe! Yummy!
I enjoy a good recipe specially steak yum thanks
This just looks so delicious! Yum!
Steak. Onions. Yum. I like that you toast the bread, too. This sounds like a great sandwich to each and watch some baseball. It’s spring and grilling, time.
As a Texan I gotta say, I love me some BBQ!!! I don’t, however, love onions lol. I will make this but without the onions. Yummy!!