Parmesan Onion Appetizer Squares on a blue plate

My Favorite Parmesan Onion Appetizer Squares

Parmesan Onion Appetizer Squares is a recipe I’ve been making since I was a new bride, way back when. Whenever I serve them, they’re always a hit with their light oniony flavor, crispy yet creamy texture, and a tiny and unexpected touch of sweetness that everyone loves!

A pile of Parmesan Onion Appetizer Squares on a blue plate. -

This year (2018) I’ve decided to re-do this recipe and serve these Parmesan Onion Appetizer Squares (yet again) at our big game celebration. It seems whenever I’m planning an occasion when appetizers are served; these Parmesan Onion Appetizer Squares always make an appearance. And rightly so.

Since I originally shared this recipe for Parmesan Onion Appetizer Squares in December of 2012, it would have been remiss of me to avoid addressing a horrible mass shooting that consumed our country only weeks before Christmas. Sadly, little did we know it, this type of senseless act of gun violence and killing would soon become relatively commonplace in our world.

This is what I wrote at that time –

As we all gather this holiday season to give thanks and reflect on the year gone by, we do so with heavy hearts at the recent horrific tragedy in Newtown, Connecticut, at Sandy Hook Elementary School.

My deepest love and prayers go out the families who have lost their loved ones (so many of them little children) in such a senseless act of violence that there can never be a sufficient understanding of.

To be writing a blog post about some silly appetizers hardly seems like the thing to be doing right now, and yet, it is the return to normal activities that are so important at this time.  Life surprisingly goes on, and whatever fear you feel must be squashed before it has a chance to consume your life. I return to my kitchen to find the solace I need and the comfort that keeps me safe and in control of my little corner of the world.

The appetizer recipe I’m sharing today for Parmesan Onion Appetizer Squares is one I’ve been making for years. It’s a quick and easy recipe to throw together, and is always a hit with party guests as it’s full of flavor and tastes good hot out of the oven, or served at room temperature on a buffet table.

Here is the photo I shared back in 2012.

Parmesan Onion Appetizer Squares with Santa Claus table cloth from 2012 -

I love this recipe for Parmesan Onion Square Appetizers so much I’ve even shot my first “cooking-show” style video of it, which I hope to upload to my YouTube channel as soon as my new computer arrives. As luck would have it, the laptop I’m using now is far too dated and full of data that it’s not powerful enough to export a 6-minute video to my files for storage. I’m 100% positive that I’m not explaining it in proper “tech speak,” but my knowledge level in that arena is limited. In the kitchen, however, I’m far more comfortable. LOL
Parmesan Onion Appetizer Square with a bite taken. -
The ingredient list to make Parmesan Onion Square Appetizers is short and sweet. You’ll need; cocktail bread (found in the deli section of the market) any flavor you prefer, mayonnaise, fresh Parmesan cheese (grated or shredded), onion (grated), salt, pepper, dried oregano, dried basil and a touch of sugar.
Making Parmesan Onion Square Appetizers couldn’t be easier, either. Mix everything in a medium bowl, except the cocktail bread. Next spread approximately 1 tablespoon of the Parmesan mixture evenly onto the cocktail bread squares and pop them into a preheated 400-degree oven for approximately 20 minutes. They’ll come out golden, creamy, crispy and can be served hot, warm, or at room temperature so they’re perfect for any sort of party!
More photos from 2012.

Parmesan Onion Appetizer Squares on a plate and close up image -

0 from 0 votes
Parmesan Onion Appetizer Squares
Prep Time
5 mins
Cook Time
20 mins
Total Time
25 mins
Parmesan Onion Appetizer Squares are always a hit with their light oniony flavor, crispy yet creamy texture, and a tiny and unexpected touch of sweetness that everyone loves!
Course: Easy Appetizer
Servings: 30 -36
Renee - Kudos Kitchen: Renée - Kudos Kitchen
  • cups mayonnaise
  • cup fresh Parmesan cheese grated or shredded
  • 3 tablespoons grated onion
  • ½ teaspoon coarse salt
  • pinch black pepper
  • 1 teaspoon dried oregano
  • 1 teaspoon dried basil
  • 1 teaspoon granulated sugar
  • cocktail bread
  1. Preheat the oven to 400-degrees.
  2. Mix the first 8 ingredients together in a medium-sized bowl.
  3. Spread approximately 1 tablespoon of the Parmesan mixture evenly onto the cocktail bread and place on a baking sheet.
  4. Bake in a preheated oven for 20 minutes, or until the Parmesan Onion Appetizer Squares are golden in color.
  5. Remove and serve hot, warm, or at room temperature.
Recipe Notes

Tools and equipment:

knife or offset spatula
baking sheet
parchment paper (optional)
wooden spoon
box grater
measuring spoons
measuring cups
medium bowl

For additional easy appetizer ideas that will serve you well for any party or gathering, please click on the following recipe titles for;

Cream Cheese and Salami Spread with Dill Pickles

Creamy Egg Salad Canapes

Spinach and Artichoke Squares

Honey and Sesame Seed Crackers

Corn and Black Bean Dip

Patty Melt Dip

I hope you’ve enjoyed this recipe for Parmesan Onion Appetizer Squares as much as I’ve enjoyed bringing it to you!

Easy to make Parmesan Onion Appetizer Squares - Kudos Kitchen by Renee

Should you have any questions regarding this recipe, or anything you see on my site, please don’t hesitate to contact me directly, or leave me a comment in the comment section below. It is always my distinct pleasure to get back to you with a reply just as soon as I possibly can!

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Kudos Kitchen by Renée ~ Where food, art, and fun collide each and every day!

Until we eat again, I hope you have a delicious day!

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  1. A classic…love this! Have you ever tried it with some dill in there?

  2. YUM! These look and sound fabulous! I love those little cocktail breads!

  3. That tray has my name on it…I'm sure you can see it if you look hard enough. And no, I'm not sharing.

  4. These look so good. I love little cocktail sandwiches.

  5. I LOVE these! I used to make a similar appetizer years ago; thanks for reminding me about them.

  6. They look so golden and delicious!!

  7. What a yummy flavor combo! Thanks for sharing this recipe 🙂

  8. Such a great appetizer. Yum! ~ Bea @ galactopdx

  9. Quick and easy classic flavors! A winner!

  10. What a quick and easy recipe that everyone would love!

  11. It is so hard but so important to get back to a sense of normalcy after such a horrific tragedy. And I have to say you have shared a serious winner in my book with this appetizer. I love the flavours.

  12. YUMMY! This looks delicious.

  13. Mmmm! I love oniony appetizers, and I think this looks fantastic!

  14. This is such a great looking appetizer. Oniony, cheesy and served on sourdough cocktail bread…what more could you ask for?

    Lovely heartfelt post Renee.

  15. Renee, I totally agree – I found it odd to post something happy and lighthearted in the wake of such tragedy, but we can't dwell on sadness. We have to move on and be grateful for the family and friends that we have in our lives. As for this appie – oh baby, that looks good! You can't go wrong with onion, mayos and cheese baked on top of carbs 😉 Happy holidays!

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