Crispy Parmesan Onion Chips
Thin onion rounds bake over a blanket of Parmesan until deeply golden, lacy around the edges, and crisp enough to snap. The result is a simple savory snack that is especially good with a cool creamy dip.
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What the Video Shows
The video demonstrates a very simple technique: Parmesan cheese is spread over a parchment-lined baking tray, a mandoline is used to cut an onion into thin, even rounds, and the onion slices are placed directly on the cheese before baking. Once browned, the cheese and onion set into crisp rounds with caramelized edges.
Crispy Parmesan Onion Chips Recipe
Ingredients
- 1 medium yellow or sweet onion
- 1 1/2 cups finely shredded or grated Parmesan cheese
- 1/2 teaspoon smoked paprika
- 1/4 teaspoon garlic powder
- 1/4 teaspoon freshly ground black pepper
- Pinch of red-pepper flakes, optional
- Chopped parsley or chives for serving, optional
For the Creamy Dip
- 1/3 cup sour cream or plain Greek yogurt
- 1 tablespoon mayonnaise, optional for extra richness
- 1 teaspoon lemon juice
- Pinch of garlic powder
- Salt and pepper to taste
Instructions
- Heat the oven: Preheat to 400°F (205°C). Line a large rimmed baking sheet with parchment paper.
- Slice the onion: Peel the onion and slice it crosswise into very thin rounds, about 1/8 inch thick. A mandoline gives the most even slices and helps the chips bake at the same rate.
- Make the Parmesan base: Spread the Parmesan across the parchment in 12 to 16 small mounds or in a thin continuous layer, depending on whether you want separate chips or a crisp sheet to break apart.
- Add the onion: Place one onion round over each mound of Parmesan. Keep the slices mostly in a single layer.
- Season: Sprinkle lightly with smoked paprika, garlic powder, black pepper and red-pepper flakes if using. Go easy on salt because Parmesan is naturally salty.
- Bake: Bake for 12 to 18 minutes, watching closely near the end. The cheese should be bubbling and deep golden around the edges and the onions should look roasted and caramelized.
- Cool for crispness: Let the chips rest on the tray for 5 to 8 minutes. They become firmer and crisper as the cheese cools.
- Serve: Lift the chips from the parchment and serve warm or at room temperature with the creamy dip.
Helpful Amazon Kitchen Tools
These tools match the technique used in the video and make the recipe easier to reproduce.
OXO Good Grips Hand-Held Mandoline Slicer
Useful for making consistently thin onion rounds so they cook evenly and crisp at the edges.
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Nordic Ware Natural Aluminum Half Sheet
A sturdy rimmed sheet pan gives the cheese room to spread and brown without spilling over the edge.
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Reynolds Kitchens Parchment Paper
Parchment helps the baked Parmesan release cleanly after cooling and makes cleanup much easier.
Check on AmazonHow to Get the Crispiest Results
- Slice the onion very thinly. Thick slices hold more moisture and can keep the cheese underneath softer.
- Use real Parmesan. Freshly grated Parmesan melts and browns more predictably than shelf-stable shaker cheese.
- Do not pull the tray too early. The cheese should be a pronounced golden brown, especially around the edges.
- Let the chips cool before judging the texture. Melted cheese firms considerably after several minutes on the tray.
- Keep onion rounds separated. Overlapping onion slices trap steam.
Flavor Variations
Spicy: Add cayenne, chili flakes or a light dusting of chipotle powder. Italian-style: Add dried oregano and basil. Everything-seasoned: Sprinkle a small amount of everything-bagel seasoning over the onion slices before baking. Extra savory: Mix a little Pecorino Romano into the Parmesan.
Serving Ideas
Serve these onion chips as an appetizer, a low-effort party snack, or a crunchy side for soup and salad. They also work well on a snack board beside olives, sliced vegetables and a creamy garlic or herb dip.
Storage and Reheating
For the best texture, eat the chips the day they are made. Once completely cool, leftovers can be stored in an airtight container in the refrigerator for up to 3 days. Re-crisp them on a parchment-lined tray in a 375°F (190°C) oven for about 4 to 6 minutes. An air fryer also works well at 350°F (175°C) for 2 to 4 minutes.
Frequently Asked Questions
Can I use mozzarella instead of Parmesan?
You can, but mozzarella contains more moisture and usually produces a softer, stretchier result. Parmesan is better for a crisp, lacy cheese base.
What onion works best?
Yellow and sweet onions are excellent because they caramelize nicely. Red onion works too and gives the chips a slightly sharper flavor.
Why are my onion chips soft?
The usual causes are onion slices that are too thick, too much cheese in one spot, overlapping onions, or removing the tray before the cheese becomes deeply golden.
Do I need a mandoline?
No. A sharp chef’s knife works, but a mandoline makes thin, uniform slices much faster. Always use the hand guard and keep fingers away from the blade.
Final Result
These crispy Parmesan onion chips turn a handful of everyday ingredients into a deeply savory snack with browned cheese, sweet roasted onion and crunchy edges. The technique is simple, and the biggest keys are thin onion slices, enough oven time for the Parmesan to brown, and a short cooling period before serving.
