
Crunchy, golden onion rings stuffed with stretchy mozzarella offer an amazing mix of textures and tastes. This oven-baked treat combines sweet onion goodness with gooey cheese, all wrapped in a crunchy coating that snaps perfectly with each bite.
The first time I served these at our family get-together, they vanished in seconds. Everyone kept grabbing for more of these crunchy cheese-filled rings. My onion-hating nephew even grabbed a handful of these cheesy, crispy treats.
Key Components
- Sweet onions: They add natural sweetness with a mild taste that works great with the cheese. Try to find Walla Walla or Vidalia types for best flavor
- Buttermilk: Softens the onions and adds great flavor. Go for the full fat kind for better taste
- Part skim mozzarella sticks: They melt perfectly without getting too oily. Keep them in the freezer until you need them
- Combination of panko, cornmeal, and crushed cereal: Gives you that amazing crunch that stays crisp after baking
- Whole wheat flour: Brings a slight nutty flavor, though regular flour works fine too
Step-by-Step Cooking Guide
- Get Your Onions Ready:
- Slice onions into half-inch rings and pull them apart carefully. Drop them in buttermilk so they're completely covered. Wrap and chill for at least an hour to make them tender.
- Set Up For Baking:
- Turn your oven to 425°F. Cover a big baking sheet with foil and put it aside. Take the onions from the buttermilk and gently dry them with paper towels.
- Fix The Cheese Center:
- Cut frozen mozzarella sticks into four long pieces each. Find onion rings that match in size, with smaller ones fitting inside bigger ones. Push cheese strips between paired rings, using about two strips per ring.
- Make Your Coating Setup:
- In a wide bowl, mix leftover flour with panko, cornmeal, and crushed cereal. Add salt and pepper to taste. In another bowl, whisk eggs until they're smooth.
- Coating And Cooking Process:
- First roll each stuffed ring in plain flour. Then dip in beaten eggs until fully covered. Back to flour for a second coat. Into eggs again for better sticking. Last, coat well in the seasoned panko mix. Put each ring carefully on your prepared sheet. Spray all sides well with cooking spray.
Let them cook for 22 minutes, flipping them over halfway. You want the outside to turn nice and golden while the cheese inside gets all melty.

Tasty Serving Suggestions
A classic marinara sauce goes wonderfully with these rings, adding a nice tangy contrast to the rich cheese. Homemade ranch dressing brings a smooth, creamy element that makes both the onion and cheese taste even better. These dips turn a simple starter into something truly special.
Food That Brings People Together
Sharing food builds connections. These cheese-filled onion rings have become a must-have at our family parties, making everyone happy. There's something magical about pulling a ring apart and watching that cheese stretch out that makes everyone smile.
The Reward of Homemade Treats
When you make snacks yourself, you can pick exactly what goes in them and create something really special. These rings taste way better than what you'd get at a restaurant. There's nothing like the feeling you get when you make something this tasty.
My grandma always told me onions make everything taste better. After cooking with lots of different kinds over the years, I've learned sweet onions really shine in this dish, especially when they're paired with rich mozzarella.

I've spent so many hours in my kitchen getting these tricks just right. The hot baking sheet idea was a total game-changer that I figured out after noticing restaurant rings always had that perfect crunch on the bottom. These little tricks might seem small but they make all the difference. What I really love is how they turn a good snack into an amazing one, always giving you that perfect crunch and cheese pull that makes everyone grab for more.
Common Questions
- → How do I keep cheese inside while frying?
- Choose onion pieces that fit tightly together and pack the cheese firmly.
- → What kind of oil works best?
- Stick to oils like peanut, canola, or vegetable because they can handle high heat.
- → Can another cheese be used?
- Sure, just choose something that melts well like provolone or cheddar.
- → Can these be baked instead of fried?
- It's not ideal since frying gives the best crunch.
- → Why do you use three layers for coating?
- That way, the crumbs stay in place and the cheese is sealed inside with a crunchier outside.