Steam curls up from the valve and your stomach starts talking back. You remember the smell of fried onions kinda floating around the kitchen like an old favorite song. Its that smell that just drives you to peek and check on the float valve, wait for the sealing ring to do its job, and know youre close to crunch city.
You catch yourself kinda wanting to dive right into the kitchen to get those cipollini onions ready. Theyre small but they hold so much flavor, and you gotta peel them just right, trimming the root bit so they bloom out nice but dont fall apart.
The broth depth you set up in your pressure cooker isnt really for stewing heres just to create steam to soften those onions a bit and get you ready for that crispy fry later. Once the natural release is done and the float valve drops, youre gonna see a blooming onion ready to soak in buttermilk and flour mix for a crunchy-crisp finish.

What Makes Pressure Cooking Win Every Round
- It heats up super fast so the float valve gets busy right quick.
- The sealing ring keeps all that steam locked in for even cooking.
- Broth depth inside helps soften your onions just enough without making them mushy.
- Natural release lets the pressure come down slowly so everything stays intact.
- Less time standing over a hot stove means you can multitask or chill.
- Pressure cookers keep flavors locked in, boosting those smoky, savory notes.
Everything You Need Lined Up
Youf gonna wanna grab 16 cipollini onions. Their small size and sweet flavor make the bloom effect real nice and tasty. Next up, buttermilkll soak them good, softening layers before the crunchy coating.
For that coating, 1 cup all purpose flour is the canvas but you also get to punch it up with 1 teaspoon garlic powder and 1 teaspoon onion powder for that double onion power. You need 1 teaspoon smoked paprika to add a little smoky warmth.
Dont forget 1 teaspoon salt, ½ teaspoon dry mustard, and ½ teaspoon black pepper. Those tiny seasoners pull the crunch together just right. Finally, youre gonna fry in peanut or vegetable oilenough for a good deep fry, you know, 350 degrees in your pot or fryer.

The Exact Process From Start to Finish
- First, peel the cipollini onions and carefully trim the root ends so they stay in one piece. Dont cut too much or the bloom won't open right.
- Make several vertical cuts around each onion, stopping about a ¼ inch from the root, to get that pretty blooming effect.
- Lay the onions in a bowl and pour a cup of buttermilk over them. Let them soak at least 20 minutes so they get soft and ready.
- In another bowl, mix all purpose flour, garlic powder, onion powder, smoked paprika, salt, dry mustard, and black pepper to season your coating.
- Take the onions outta the buttermilk, dredge them in the flour mixture to cover every petal tight, then let them rest on a tray for about 10 minutes so the flour sticks better.
- Heat your oil to 350 F in a deep fryer or pot and fry onions a few at a time for 2 to 3 minutes until golden and crispy. Drain on paper towels and serve warm with your fav dipping sauce.
Quick Tricks That Save Your Time
- Skin the cipollini onions ahead and store them in water to keep fresh until you ready to use.
- Use a kitchen aide or a melon baller to make even cuts quickly around each onion.
- Mix your seasoned flour the night before to save prep time on cooking day.
- Warm your oil with the pressure cooker lid off while you prep the onions to hit frying temp right away.
- Use a slotted spoon for easy lifting and draining so you dont lose any crispy bits.
When You Finally Get to Eat
You spot that crispy outside shell shimmering bold with the spicy paprika dust. The crunch is your first bite hitting you with that sizzle and snap that just feels right.
Inside, the tender bloom of sweet cipollini onion peels back soft and warm. It sorta melts in your mouth with a juicy bite and a soft bite at the same time.
That buttermilk soak gave the center a little tang that cuts through the fried richness and keeps everything fresh tasting.
Paired with a creamy dip, you got a perfect combo that works real good for snack time or that party table wow factor.

Keeping Leftovers Fresh and Ready
Once you got leftovers, the main goal is to keep that crunch alive. First, cool the onions totally to room temp on a wire rack before you store moisture kills crisp.
Pack 'em loose in an airtight container lined with paper towels to catch any drips and keep 'em dry. Store in the fridge and try to eat within 2 days for best bite.
If you wanna reheat, use an oven or air fryer over quick microwave zap for keeping that crunch popping. A few minutes at low temp works better than soggy reheat.
The FAQ Section You Actually Need
- Q: Can you use a different kind of onion for this recipe?
A: You can but cipollini onions are best for blooming because they hold their shape and sweetness well. - Q: Why do you soak onions in buttermilk?
A: It helps soften layers and stick the flour mix better. Also adds a little tang to balance the fried coating. - Q: Whats the point of slow release?
A: Slow release or natural release lets steam escape gently so your onions dont break apart when pressure drops. - Q: How much broth depth do you put in the cooker?
A: Just enough water to cover the bottom and create steam like 1 cup. No need for lots cause you dont wanna stew these. - Q: Can you fry these without a deep fryer?
A: Totally! A heavy pot with oil works just fine. Just keep an eye on the temp to stay at 350 F. - Q: How do I keep the batter crunchy after frying?
A: Drain on paper towels and serve up soon. Leftovers do better reheated in dry heat like oven or air fryer for crunch.

Baby Bloomin’ OnionsJenny Park – Pressure Cooker Style
Equipment
- 1 Mixing bowl Large
Ingredients
Main ingredients
- 16 cipollini onions
- 1 cup buttermilk
- 1 cup all purpose flour
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 1 teaspoon smoked paprika
- 1 teaspoon salt
- 0.5 teaspoon dry mustard
- 0.5 teaspoon black pepper
- peanut or vegetable oil for frying
Instructions
Instructions
- Peel the cipollini onions and carefully trim the root ends slightly to keep them intact.
- Make several vertical cuts around each onion, stopping ¼ inch from the root to create a blooming shape.
- Place onions in a bowl and soak in buttermilk for at least 20 minutes.
- In another bowl, mix flour, garlic powder, onion powder, smoked paprika, salt, dry mustard, and black pepper.
- Remove onions from buttermilk, dredge in flour mixture, coating well.
- Let coated onions rest for 10 minutes to allow flour to adhere.
- Heat oil in a deep fryer or pot to 350°F.
- Fry onions a few at a time, cut side down, for 2-3 minutes until golden.
- Flip and fry 1-2 more minutes to crisp fully.
- Drain on paper towels and serve warm with dipping sauce.


