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+ servings
3.73 from 43 votes
Overhead photo of a blue tray of Parmesan onion appetizer squares.
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: cheesy appetizer, Easy Appetizer
Cuisine: Party food
Keyword: cheesy baked appetizers, Parmesan Onion Appetizer Squares
Servings: 30
Calories: 96 kcal
Renee - Kudos Kitchen: Renée
  • cups mayonnaise
  • cup Parmesan cheese grated or shredded
  • 3 tablespoons grated onion
  • ½ teaspoon salt
  • pinch black pepper
  • 1 teaspoon dried oregano
  • 1 teaspoon dried basil
  • 1 teaspoon granulated sugar
  • 30 party 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

Nutrition Facts
Parmesan Onion Appetizer Squares
Amount Per Serving (1 g)
Calories 96 Calories from Fat 81
% Daily Value*
Fat 9g14%
Saturated Fat 2g13%
Cholesterol 8mg3%
Sodium 190mg8%
Potassium 8mg0%
Protein 1g2%
Vitamin A 45IU1%
Vitamin C 0.1mg0%
Calcium 62mg6%
Iron 0.1mg1%
* Percent Daily Values are based on a 2000 calorie diet.