Savory Parmesan Onion Bread

Name: Savory Parmesan Onion Bread
Prep time: 20 min
Cook time: 5 min
Total time: 25 min
Yield: 4 servings
Cuisine: American
Ingredients: 1 cup mayonnaise; 1 cup grated Parmesan cheese; 1/3 cup Worcestershire sauce; 1 large onion, grated; 1 loaf artisan white bread, sliced

Savory Parmesan Onion Bread is a generations-old holiday appetizer featuring artisan bread topped with a creamy mayo-Parmesan-onion mixture, broiled until golden and bubbly. It's a simple, make-ahead crowd-pleaser that requires no special skills.

🌍American 🏷️Cheesy bread 🏷️Appetizer 🏷️Holiday appetizer 🏷️Parmesan Onion

🏷️

🏷️Savory

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Total

25 min

Servings

4

Difficulty

Easy

Est. Cost

$13–$21

Recipe Source

View original recipe

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Ingredients

1 cup mayonnaise
1 cup grated Parmesan cheese
1/3 cup Worcestershire sauce
1 large onion, grated
1 loaf artisan white bread, sliced

5 Ingredients

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Instructions

1
In a medium bowl, combine the mayonnaise, grated Parmesan cheese, Worcestershire sauce, and grated onion.
2
Mix the ingredients with a fork or spoon until fully combined and the texture is thick and pasty.
3
Refrigerate the spread for 15 minutes.
4
Line a baking sheet with aluminum foil.
5
Arrange slices of artisan bread on the prepared baking sheet in a single layer.
6
Remove the spread from the refrigerator and generously coat each slice of bread.
7
Set your oven's broiler to high.
8
Place the baking sheet in the oven under the broiler. Broil for 2-4 minutes, watching constantly until the top is browned and bubbly. Do not walk away, as it can burn quickly.
9
Carefully remove from the oven and let cool slightly before serving.

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Tips & Notes

Pro tips

Grate the onion finely and squeeze out excess moisture in a clean kitchen towel to prevent a soggy spread and watery bread.
Watch the broiler closely — it takes 3–5 minutes to achieve golden-brown edges, and timing varies by oven strength.
Slice the bread on a slight angle to create larger surface area for more topping per slice.
Use full-fat mayonnaise and freshly grated Parmesan (not pre-shredded) for the best emulsion and flavor.

Substitutions

Artisan white bread → sourdough or baguette (adds tang; reduce Worcestershire slightly)
Mayonnaise → Greek yogurt mixed with a touch of mayo (tangier, less rich)
Worcestershire sauce → soy sauce or tamari (use 1/4 cup; adds umami)

Storage & make-ahead

Store leftover spread (without bread) in an airtight container for up to 3 days. Prepared unbaked bread keeps refrigerated for up to 8 hours. Broil fresh before serving for best texture; leftovers can be reheated gently in a 350°F oven for 5 minutes.