creamed parmesan pearl onion casserole

Bellevue, WA
Updated on Nov 13, 2025

This is a must-have side dish for my family's Thanksgiving. Do not use pickled or cocktail onions. Use plain ones in brine, such as Aunt Nellie's brand Holland-style Pearl Onions in a clear glass jar. You could pre-cook frozen pearl onions, but the jarred ones are better and softer. The sherry is optional. I have not made this using regular, fresh onions. Walmart sells Aunt Nellie's in a jar, and I've found it at QFC (Kroger affiliate) in Washington state, and sometimes at Albertsons. You can make this one day ahead and partially bake. Then finish baking for 10-15 minutes on the day of.

Blue Ribbon Recipe

Growing up, you probably found this creamed Parmesan pearl onion casserole on your Christmas or Thanksgiving table. It's nostalgic and just as delicious as we remember from being a kid. The onions are tender and almost sweet next to the creamy sauce. Parmesan cheese adds salt and a savory flavor to the sauce. Melted cheese and paprika sprinkled on top make this simple side dish seem fancy.

prep time 10 Min
cook time 40 Min
method Bake
yield 8 serving(s)

Ingredients

  • 2 jars whole pearl onions (15 oz each)
  • 1/3 cup butter
  • 1/3 cup all-purpose flour
  • 2 cups cream or half and half
  • 1 - 2 tablespoons dry sherry, optional
  • 1/3 cup freshly grated Parmesan cheese
  • 1/2 teaspoon dry mustard powder
  • pinch nutmeg
  • - salt and pepper, to taste
  • 1/2 cup grated cheddar cheese
  • - paprika

How To Make creamed parmesan pearl onion casserole

Test Kitchen Tips
We could not locate the jarred onions and used frozen pearl onions (each bag was 12 oz). If using frozen, make sure they are completely thawed and drain the water from them.
  • Drain onions.
    Step 1
    Open the jars and drain onions. Preheat oven to 350 degrees F.
  • Add flour to melted butter and stir.
    Step 2
    Melt butter in a 2-quart saucepan or saute pan over medium heat. Turn the heat to low and stir in the flour. Cook for 2-3 minutes, stirring constantly. You must cook a little to avoid a raw flour flavor.
  • Add cream.
    Step 3
    Stir in cream (or half and half). Whisk until smooth.
  • Whisk in sherry.
    Step 4
    Whisk in sherry if you are using it.
  • Stir in Parmesan cheese, mustard powder, nutmeg, salt, and pepper.
    Step 5
    Stir in Parmesan, mustard powder, nutmeg, salt, and pepper.
  • Stir well and melt the cheese.
    Step 6
    Stir well to thoroughly combine ingredients and melt the cheese.
  • Add onions to a greased baking dish.
    Step 7
    Grease a small oven baking dish (or spray with nonstick cooking spray). Put the drained onions into the baking dish.
  • Cover with the cream sauce.
    Step 8
    Then cover onions with the white sauce mixture.
  • Sprinkle with cheddar cheese.
    Step 9
    Sprinkle with cheddar cheese over top. Then sprinkle paprika over top.
  • Bake for 35 - 40 minutes.
    Step 10
    Bake at 350 degrees F for 35-40 minutes, until mixture is bubbly and hot. If desired, broil the top briefly until golden brown.

Nutrition Facts

(per serving*)
calories: 265kcal, carbohydrates: 18g, cholesterol: 52mg, fat: 19g, fiber: 3g, protein: 7g, saturated fat: 11g, sodium: 417mg, sugar: 7g, unsaturated fat: 7g
*Daily Values are based on a 2,000 calorie diet. Nutrition information is estimated.

Discover More

Category: Vegetables
Keyword: #cheese
Keyword: #Parmesan
Keyword: #creamed
Keyword: #Casserole
Keyword: #onions
Keyword: #pearl
Collection: Bold With Butter
Collection: Meatless Mondays
Ingredient: Vegetable
Method: Bake
Culture: American

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