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Appetizer Recipes

Crispy Parmesan Ranch Onion Chips

6 - 8 servings
Gluten-Free Diet, Vegetarian Diet, American Baking

Create the viral sensation, Crispy Parmesan Ranch Onion Chips, on a single sheet pan for a fun, shareable snack. By layering thin onion slices on a bed of Parmesan and baking until deeply golden, you get an irresistibly savory and crunchy treat. This simple recipe is perfect for parties or...

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... anytime you crave a cheesy, flavorful bite.

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ChefLynn ChefLynn Cool Cook
July 10, 2025
Crispy Parmesan Ranch Onion Chips in detail on the white plate on the kitchen table
  • 10 min.
  • 35 min.
  • 1/5
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Ingredients:

Chips:

  • 1 of sweet onion - peeled and sliced (1/8" or less)
  • 12 OZ of parmesan cheese - grated
  • 2 - 3 TSP of Ranch seasoning powder - powder (Or your favorite savory seasoning)
  • Cooking Spray (Duck fat or avocado or canola oil)
  • 1 Pinch of flaky sea salt (adjust if needed, to taste)
  • 1 Pinch of black pepper - freshly cracked (adjust if needed, to taste)

For Serving:

  • Optionally: 1 of Your favorite dip (adjust if needed, such as ranch dressing, onion dip, or a creamy ginger dressing)

Tools:

Directions:

1. Preheat Oven

Let’s start the preparation of Crispy Parmesan Ranch Onion Chips by preheating the oven.

  • Place an oven rack in the middle position and preheat to 400°F (200°C).

2. Prepare the Baking Sheet:

  • Line a large baking sheet with parchment paper.

Important:
This is crucial to prevent the cheese from sticking and helps achieve a crispier result than a silicone mat.

3. Create the Cheese Base:

  • Sprinkle the grated Parmesan cheese evenly over the parchment paper, creating a solid, thin layer from edge to edge.

4. Arrange the Onions:

  • Prepare your onion by slicing it as thinly as you can. A mandoline is best for this. It is very important to keep the onion slices intact; do not separate them into individual rings.
  • Carefully lay the whole onion slices in a single layer over the bed of cheese.
  • You can gently press and piece them together if they fall apart.

5. Season the Onions:

  • Generously spray the tops of the onions with your cooking spray (like the flavorful duck fat spray). This helps them cook and brown.
  • Sprinkle the Ranch seasoning powder evenly over the onions.
  • Add a light sprinkle of black pepper.
  • Taste your seasoning blend first. If it already contains a lot of salt, you may not need to add more, as Parmesan is also quite salty. If needed, add a very small pinch of salt.

6. Add Final Cheese Layer (Optional):

  • For extra cheesiness, you can sprinkle any remaining Parmesan over the top of the seasoned onions.

7. Bake until Golden and Crispy

  • Place the baking sheet in the preheated oven and bake for 20 to 25 minutes.
  • Don’t be afraid to let it get deeply browned!
  • The goal is a rich, golden-brown color across the cheese.
  • This extended time is what makes the chips crispy rather than soft.
  • The onions should be tender and cooked through.

8. Cool Completely:

  • Remove the baking sheet from the oven and place it on a wire rack.
  • Let it cool for at least 10-15 minutes.
  • This step is essential; as the cheese cools, it will harden and become crispy.

9. Serve:

  • Once cooled, break the sheet of onion crisps into pieces of your desired size.
  • Serve immediately on its own or with your favorite dip.

 Tips:

  • For Maximum Crispiness: To achieve the best crunch, using parchment paper instead of a silicone mat is recommended, as it allows for better heat transfer to the bottom layer of cheese. Be sure to bake for the full 20-25 minutes, or until the cheese is a deep, uniform golden brown, not just lightly melted.
  • Fixing a Soft Batch: If your chips aren’t as crisp as you’d like after cooling, you can place the pieces in a dry, non-stick skillet over medium heat. Cook for a few minutes to further brown and crisp up the bottom.
  • Flavor Customization: Get creative with the flavors. For a “pizza” variation, try adding a layer of pepperoni on top of the onions before baking.
About the Author:
ChefLynnCool Cook
# 3
  • Published Recipes: 23
  • Av. Recipe Evaluation:
  • Location: Florida, USA
  • Member since: 2024-09-08
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