
These grilled beef and vegetable skewers are seasoned with sumac for a tangy and flavorful twist. Perfect for summer grilling!
Ingredients
- 1 pound beef sirloin cut into 1-inch cubes
- 1 red bell pepper cut into 1-inch pieces
- 1 yellow bell pepper cut into 1-inch pieces
- 1 red onion cut into 1-inch pieces
- 2 tbsp olive oil
- 2 tbsp lemon juice fresh
- 2 tbsp sumac
- Salt and pepper to taste
Instructions
- Preheat grill to medium-high heat.
- In a bowl, combine olive oil, lemon juice, sumac, salt, and pepper.
- Thread beef cubes, bell pepper pieces, and red onion pieces onto skewers.
- Brush the skewers with the sumac marinade.
- Grill the skewers for about 3-4 minutes per side, or until the beef is cooked to your desired doneness and the vegetables are tender.
- Serve hot and enjoy!
Nutrition
Calories: 320kcalCarbohydrates: 12gProtein: 28gFat: 18gFiber: 4g

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Skewers are fine, but I’m not sure about that sumac… Got a weird aftertaste! Maybe just a bad batch?
Quick and easy! Wish I had more time to grill, though. Also, red onions are the best part!
I mean, the recipe is good, but I burned my beef. How long should I really grill it? 🤷♂️
Just grill it until it looks brown, I guess? Just don’t burn it like I did! 😂
You should really stick to 3-4 minutes per side. Don’t let it go too long, or you’ll just end up with charcoal! 🤦♂️
Really wanted to like this, but my kids wouldn’t touch the veggies. Maybe I’ll try just beef next time.
I love cooking on the grill, thank you for this awesome recipe. Skewers are the best!!
Honestly, this was kind of dry. Should’ve marinated longer or smth.
What even is sumac? I couldn’t find it at my store…just used paprika. 😅
Sumac is a tangy spice, but paprika works too! Just won’t have that zesty flavor. Nice improvisation! 😊
Yummy! Used chicken instead of beef and it turned out fine! 😊
Yum! So easy and delish 😋. I added mushrooms too. Perfect.
What is sumac? Never heard of it. Can I use something else? Like pepper or BBQ sauce?
Gr8 recipe. Just what I needed for my cookout.
Tasted great but my beef was a bit tough. Maybe I should’ve marinated it longer?
These skewers were a hit at our BBQ! The sumac gave it such a nice zing!
Too much lemon for my taste. Ended up pouring more oil to balance it out.
Absolutely loved these skewers! The sumac added such a nice flavor. Will definitely make again!
These are the best! My family loved them. I didn’t even care to grill, I just did them on the stove 😂.
Grilled too long, they was dried out 😩. My family didn’t like it. I will stick to my usual spices!
This recipe is bomb! The sumac adds a nice twist to the usual grilled skewers. Definitely a keeper!
I tried it and the beef was too tough for me. Maybe I overcooked it? Not sure sumac is for everyone.
I’ve had a similar issue with beef before. It’s all about finding the right cook time! Don’t give up on sumac, it can be delish if used correctly!
What’s sumac? I’m not familiar but willing to try. Sounds fancy but I just want my meat good.
Yummy good!! I love grilling in the summer. These skewers made my BBQ awesome!
Skeptical about sumac but it actually worked! Never thought I’d say that.
Yummy skewer meals are the best! Easy to make and taste great. Thumbs up!
I totally agree! Skewers are so versatile and make for a fun grilling experience. Can’t wait to try this recipe!
These tasted amazing! I’m definitely making them again.
I can’t wait to try these! They sound really tasty, but what if I don’t have sumac? Can I use something else?
Sumac tastes kinda like lemon pepper? I didn’t grow up using it so I was like “what is this?” but it totally worked with the grill smoke.
I don’t know, sumac is kinda weird. Can I use lemon pepper instead?
I just used old veggies and it was still good. Grilled is life!
Too much prep for me! Just throw a steak on the grill, why not?
Absolutely delicious! The flavors are spot on! My whole family loved it.
I’m glad you enjoyed it! Those flavors really do come together nicely, don’t they?
These skewers sound amazing—sumac + lemon is such a perfect combo. I’d definitely grill a little longer for more char on the peppers.
Easy and quick! I used leftover veggies and it worked. Also my kids ate it without complaining (rare).
Used chicken because I didn’t have sirloin and honestly it was still great. Also I forgot to salt until after grilling… but yeah, not ideal. Fix that and it’s awesome.
Pretty straightforward, love how you balance acid (lemon) with the savory beef. I usually add a pinch of garlic too, but the base is solid.
I tried something similar and it came out great, but I recommend soaking the onions/peppers in the marinade for like 10-15 minutes first. Maybe it helps seasoning stick.
That makes sense! The sumac + lemon mix feels like it would cling better after a short soak. I’m gonna try 10 minutes next time—great tip.
I’m not sure soaking is necessary… I just brush it on and the flavor is plenty. Also, 10-15 min might make the onion too soft on the grill? Maybe but idk.
Directions say brush with marinade, but I want more coating. Can I just pour some over while grilling? Also do you flip only once?
I followed it exactly and my grill flare-ups burned the pepper edges a bit. Flavor was good, but visually not pretty. Maybe lower heat?
Yeah, that makes sense—peppers brown fast on higher heat. Next time try medium heat and maybe brush less marinade right before the flip (sumac can char). You can also cut the peppers a touch bigger.
Sumac is overrated. It tastes like… lemony dirt? lol. I know that sounds harsh, but I didn’t love it.
Totally get what you mean—sumac can be really sharp. I still love it, but if you’re not into that tangy “lemony” bite, it can feel a little earthy. Maybe try using a bit less next time?
The prep is easy, but I’m skeptical about 3-4 minutes per side for sirloin cubes. Mine usually takes longer unless they’re really small. Anyone else?
1 pound beef sirloin… okay but how thick are the cubes? I did 2 inch once and it was raw inside. Timing matters!
Grilled beef skewers are my weakness lol. This looks delicious, but I’m gonna add mushrooms because life is short.
Turned out solid, but I think my skewers cooked unevenly because some onion pieces were thicker. Next time I’ll make everything the same size like the recipe says.
Not gonna lie, “sumac marinade” sounds fancy but it’s just lemon + spices, right? Still, the tang is legit. Will make again.
These were shockingly good. The sumac really makes the whole thing taste bright, like restaurant-style. I did 4 minutes a side and the beef stayed juicy.
Yes!! Sumac really is the secret—totally makes it taste “restaurant bright.” Glad your timing worked out and the beef stayed juicy. I’ll try 4 minutes a side next time.
I’m not sure about 2 tbsp sumac—felt a little intense. Could be just my brand though. Still tasty, just more tang than I expected.
I made these last week and my family devoured them. The onions caramelized just right. Will make again for sure.
Love hearing this! That sumac/lemon combo really makes the onions sing when they caramelize—great job. 😄
Huh, caramelized onions AND only 3-4 min per side? I tried something like this but my onions stayed crunchy. Maybe my grill temp was off… I’ll give your method a shot though.
Not sure about only 2 tbsp sumac for 1 lb beef—feels like it might be a bit much or not enough depending on the brand. Still, I’ll try it because sumac is awesome.
2 tbsp sumac for 1 lb seems perfect to me. It gives that tangy lemony flavor without making it too sour. Just taste the marinade before grilling—if it’s too intense, add a bit more olive oil or lemon.
I get what you mean—sumac varies a lot by brand. I usually start around 1.5 tbsp for 1 lb and then bump it next time. Two tbsp isn’t insane though since it’s mixed with oil and lemon.