Blossom Onions Grilled and Planked with Red Pepper Aioli

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Planked blossom onion You know those famous bloomin onions that are battered, deep fried, loaded with calories and sodium? Well here’s my version, it’s seasoned with fresh and dried herbs, olive oil and grated romano cheese, then they’re placed on a plank, grilled and served with a red pepper aioli sauce for dipping.

You can serve this as an appetizer or a side at any of your cookouts, it’s way healthier, the flavors taste amazing, and it has a great presentation.

cutting blossom onions First you have to select large sweet onions, I chose vidalia onions for this recipe, nice big ones. Next, you have to figure out how to cut the onions properly, I didn’t know how to do that until I did a little research on Google and found this step by step process, it was very helpful, easy to do ( with a sharp knife) and worked out perfectly.

Once you cut the onions properly the whole thing will blossom out just like a flower with petals, the more wedges cut into the onions the prettier it will look, that’s why you need to use large ones.

Then it’s all about the seasonings you choose and you’re ready to go, use your favorites.  Of course I made my onions Italian style, dusting with the dry first and then garnishing with the fresh. You can do spicy Cajun ,Mexican stlye, whatever sounds good to you, but always finishing the onions off with a generous drizzle of olive oil all over.

Do all your oiling and seasoning prior to placing on the plank to avoid flare ups, but it’s still a good idea to have a spray bottle filled with water near the grill just in case.

planked blossom onion I wanted to try planking my onions and using a hickory board this time, but you can certainly make this without a plank by simply wrapping the onion in heavy duty foil and placing the bundles straight on the grill for around 30 minutes or so, towards the end open up the foil so it gets golden on top.

Sometimes grilling planks can be hard to find especially when you want to try different wood flavors besides cedar, here’s a great online source.

planked blossom onions I cooked mine low and slow until the petals pulled off easily, it took about an hour, but the smell was intoxicating, I don’t have to tell you how good grilled onions smell, you can just imagine!

planked blossom onionsplanked blossom onion A quick red pepper aioli is delicious for dipping as you’re sipping a nice cold drink by your side. Enjoy!

Blossom Onions Grilled and Planked with Red Pepper Aioli
  • Large sweet onions, like Vadalia's
  • 1 large grilling plank, cedar, hickory, maple, etc. soaked for over 2 hours ( I could fit 3 onions on mine but plank sizes vary).
  • Italian seasoning blend, dry
  • grated romano or parmesan cheese
  • granulated garlic
  • paprika
  • olive oil
  • salt and pepper to taste
  • fresh herbs for garnish
  • 1 cup of roasted red peppers, either made yourself or a good jarred one that has been drained and patted dry well
  • ¾ cup of good organic mayonnaise
  • 1 crushed garlic clove
  • salt and pepper to taste
  1. Prepare your onions by cutting ½ inch off the stem end, then peel all the skin off.
  2. Place onion cut side down, then ½ inch from the ROOT make a downward cut straight to your cutting board.
  3. Repeat to make four evenly spaced cuts around the onion.
  4. Continue slicing evenly between sections until you have 16 evenly spaced cuts.
  5. Turn the onion over and separate the petals.
  6. on foil ( for easy clean up) sprinkle your onions with the Italian seasoning mix, salt and pepper and grated cheese.
  7. Finish by generously drizzling olive oil all over.
  8. Place on plank, if using.
  9. Have grill heated on low and cook until petals pull off easily and our soft and tender. About 1 hour.
  10. Garnish with fresh basil and parsley.
  12. Place all the ingredients into a food processor until well blended.


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  1. Beautiful, and what a fun thing to serve.

  2. This makes such a pretty presentation, Marie! I can see these as the perfect accompaniment to a nice juicy steak.

  3. Marie, I absolute *lurve* onions made all sorts of ways, but I’ve never actually tried an onion flower. They look incredible!

  4. Denise Lamb says

    Marie: We had these for dinner tonight and they were a very
    big hit. Can’t wait to make them again for the extended
    Very easy to make and I had some garlic mayonnaise aioli
    so I just mixed that in with the peppers.

    So nice and easy and so very tasty.


  5. Thank you for a brilliant recipe. I love the idea of grilling them. I’m going to use our Texas 1015 onions. They are huge and have a sweet taste to them. I love your blog! You come up with some great ideas.

  6. Wow! Can’t wait to try these!

  7. These look amazing!

  8. Very nice Marie — you sure have a winning way with vegetables. Love the presentation!

  9. i LOVE following your posts!!! This is awesome and all I need is to get my Vidalia onions and I am on it! Thanks for great ideas!!

  10. Oh Marie – these are just sensational. You can be sure I’m trying these once I get home.

  11. This is brilliant! Thank you again for your fabulous ideas…you are an inspiration.

  12. What a great idea Marie! Definitely something to try this summer…and save the fried ones for winter:)


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