Minnesota Cooking: Deep Fried Onion Rings With a Buttermilk Marinade

Updated on December 31, 2019
firstcookbooklady profile image

Char is a creative writer, artist, and inventor—in and out of the kitchen.

Onion Rings: The Basics

For a great onion ring, you must select the largest sweet onions you can find, large and round. The onion is peeled and sliced cross-ways in slices the width of your finger. The onion has natural rings inside, and you will have to separate the rings from each other.

You can, but usually do not, use all the rings from an onion. Most people use only the outside few, since the size is large, and you get a ring. Too small and you end up with just a blob with coating.


  1. Slice onions into finger-thick rings. Let soak in buttermilk for at least 30 minutes.
  2. Drain onions. Collect marinade in bowl. Put Fry Magic coating mix in a covered box. Put four onions in Fry Magic. Shake to coat. Dip coated onions in marinade and then, recoat in Fry Magic.
  3. Carefully place in deep fryer. Let fry for 2 minutes or until rusty brown.
  4. Place browned onion rings onto paper lined plate. Let drain. Eat.


  • 10 rings onion, rings
  • 5 green pepper, rings
  • 2 cups Buttermilk
  • 2 teaspoons Tabasco
  • 2 cups Fry Magic
  • 1 gallon canola oil, in deep fryer 360 degrees

Cook Time

Prep time: 1 hour
Cook time: 2 min
Ready in: 1 hour 2 min
Yields: batch of onions rings
5 stars from 1 rating of deep fried onion rings and peppers

The Coated Onion After Deep Frying

Crisp on the outside, sweet cooked onion on the inside.
Crisp on the outside, sweet cooked onion on the inside.

The Secret Is in the Marinade

The marinade is a blend of buttermilk and a couple spoonfuls of Tabasco sauce.

Yes. Believe it or not. You take a gallon-size Ziploc bag and place your onion slices in it. Then, open a 16-ounce container of buttermilk and dump it in. Add your 2 tablespoons of Tabasco and close it up. Let the onions sit in this mixture for at least a half an hour.

The buttermilk is a natural tangy flavor. The Tabasco sauce is, well, very hot. If you prefer no heat, skip the Tabasco.

That's Not All - Green Peppers, Too

After your onions marinate, you'll need to pour the marinade mixture into a bowl. Then you'll need to dip your onion rings into a dry mix. Then back into the bowl of marinade and once again into the dry mix.

It's a wet, dry, wet, dry, deep fry process.

You basically have to set your flavor and coat your onions with the powder so that the next batch of wet and dry will set on your onion.

Then, you place into your waiting deep fryer and fry for 2 minutes. It may not even take 2 minutes. Just long enough for your coating to become a deep, dark, rusty brown color. Then, take out of the deep fryer. Place on a paper towel covered plate or pan and prepare to eat.

Oh, and before I forget, I also sliced up some green pepper rings to 'just try' to fry.

Click thumbnail to view full-size
Put in bag. Pour in container of Buttermilk.Add Tabasco, if you want. If not. Don't.
Put in bag. Pour in container of Buttermilk.
Put in bag. Pour in container of Buttermilk.
Add Tabasco, if you want. If not. Don't.
Add Tabasco, if you want. If not. Don't.
Click thumbnail to view full-size


Peel your onion. Discard outside. Peel off rings, place in zip lock bag. Slice pepper. Add all to gallon-size Ziploc bag.

Add buttermilk and Tabasco to bag. Let it sit in marinade, turning bag occasionally to make sure the fluid moves around and the onions and peppers are always sitting in mixture.

Click thumbnail to view full-size
Click thumbnail to view full-size
Click thumbnail to view full-size
Click thumbnail to view full-size


Yep. Just drain your onions and collect the marinade in a bowl.

Then, I put my onions in a box with a cover and shook them around, coating the pieces with the Fry Magic. Then, since the instructions that I had said to place the coated pieces back into the marinade and then back into the dry mix, I did that.

A double dip, I call it.

I questioned whether I needed to double dip or not, and fried one onion ring without double dipping. Well, the coating fell off. The rings that I double dipped stayed on and did not fall of.

That was the difference. So, I double dipped all the rest. I did have to change my dry coating mix after a bit, since with all the double dipping, my dry mix got too wet to stick to my onions. The only thing we noticed with this recipe was that you could really taste the salty taste of the Fry Magic with the Buttermilk marinade. The original recipe called for plain flour. Perhaps that would be better.

You'll have to try it both ways and let me know what you think.


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    • firstcookbooklady profile imageAUTHOR

      Char Milbrett 

      3 years ago from Minnesota

      Peachy, we are stuck on the Fry Magic. We used to use flour, Lawry's, black pepper, oregano, poultry seasoning, corn meal and hmmm, what else... but we decided the Fry Magic tastes really good. I think they would be fine with a beer/Fry Magic coating, too. Dry mix, beer batter, fry.

    • peachpurple profile image


      3 years ago from Home Sweet Home

      Maybe you could opt out the buttermilk, season with a little salt n pepper

    • firstcookbooklady profile imageAUTHOR

      Char Milbrett 

      3 years ago from Minnesota

      Peachy, They 'were' crispy and crunchy on the outside... a little salty, since the Buttermilk must enhance the saltiness...

    • peachpurple profile image


      3 years ago from Home Sweet Home

      oh your onion rings looked crispy and crunchy, alike Burger King Onion Rings!


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