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Potato and Onion Soup (Potage Parmentier) for #CookforJulia #SundaySupper

Recipe: Potato and Onion Soup (Potage Parmentier)

Summary: A perfectly simple potato soup that will have you rolling your eyes back in your head with its pure flavor. Thank you for the inspiration, Julia Child!

Idaho Russet potatoes [1]Ingredients

  • 1 pound Idaho Russet potatoes (about 3-4 cups), peeled and quartered
  • 1 pound onions (about 3 cups), peeled and quartered
  • 2-3 garlic cloves, crushed or minced
  • 8 cups water
  • 1 1/2 teaspoons sea salt
  • 3 tablespoons unsalted butter
  • 4-6 tablespoons heavy cream
  • Freshly ground pepper
  • Garnishes: 6 pieces cooked bacon, diced, AND 2-4 tablespoons minced chives and parsley


  1. Place potatoes, onions, garlic, water and salt in a 3- to 4-quart saucepan, and bring to a boil. Turn heat down to a low simmer, and cook, uncovered, for 50 minutes.
  2. Remove pot from heat, and, using an immersion blender, purée the vegetables (and water) until smooth. Cut the butter into pieces and add it, stirring until it dissolves. Stir in cream.
  3. Taste and adjust seasonings, adding more salt if needed (careful with salt if you are adding bacon as a garnish).
  4. Ladle into soup bowls, top with a grinding of fresh black pepper, some chopped bacon and a shower of herbs (bacon and herbs optional but advised).
  5. Makes about 7-8 cups. Serves 4-6.

Sweet Potato Onion Soup [2]Variation

Once you make it with Idaho russet potatoes, try it sometime with sweet potatoes, for a completely different take on this soup. All other ingredients remain the same; just sub 1 pound of sweet potatoes (garnet yams) for the pound of russets.

Mastering the Art of French Cooking [3]Source

Adapted from “Mastering the Art of French Cooking” by Julia Child, Louisette Bertholle and Simone Beck (Alfred A. Knopf, 1961).

Julia says…

“Learn how to cook — try new recipes, learn from your mistakes, be fearless, and above all have fun!” 

Preparation time: 15 minutes
Cooking time: 1 hour
Number of servings (yield): 4-6
Culinary tradition: French
My rating 5 stars:  ★★★★★

The Sunday Supper Group has enjoyed creating Julia’s recipes in honor of her 100th birthday.  Come join us live on Twitter today at 4 p.m. PST where we will chat about all things Julia (using hashtag #SundaySupper)! Also check out our #sundaysupper pinterest board [4] for more recipes.

Please enjoy our Julia Child menu, and cook something from here yourself! Bon appetit!

#CookForJulia Breakfast

Râpée Morvandelle by Cindy’s Recipes and Writings
Croissants by Cookistry
Cheese and Bacon Quiche by Tora’s Real Food [5]

Potato and Onion Soup from Julia Child on Shockingly Delicious [6]#CookForJulia Lunch

Potato and Onion Soup (Potage Parmentier) by Shockingly Delicious [7]
Tuna Salad Nicoise by Magnolia Days
Blood Orange, Walnut, and Rocket Salad by Granny’s Down Home Southern Cooking
Croque Monsieur by Webicurean
Spinach and Cream Cheese Pancakes by Happy Baking Days
Julia’s Chicken Salad by My Trials in the Kitchen
Pissaladière Niçoise (Onion Tart with Anchovies and Black Olives) by The Wimpy Vegetarian
Provencal Tomato Quiche by Are you hungry?
Quiche Lorraine  Spoon and Saucer  [8]

#CookForJulia Dinner

Bouillabaisse by The Girl in the Little Red Kitchen
Boeuf Bourguignon by Chelsea’s Culinary Indulgence
Orecchiette Con Broccoli Di Rape and Sausages by Doggie at the Dinner Table
Boeuf Bourguignon by Hezzi D’s Books and Cooks
Veal Stew with Onions and Mushrooms with Baked Cucumbers and Boiled Potatoes (Blanquette de veau a l’ancienne with concombres au buerre) by Kimchi Mom
Salmon en Papillote by Girlichef
Poached salmon with cucumber sauce by Katherine Martinelli
Lobster Souffle and Deviled Chicken- Crispy Bits & Burnt Ends
Roasted Chicken with Julia’s Mustard Marinade by The Meltaways
Wild Mushroom and Herb Stuffed Chicken- Mama Mommy Mom
Puree of White Beans with Garlic and Herbs (Brandade á la Soissonaise) Avocado Pesto
Poulet au Porto by Family Foodie  [9]

#CookForJulia Sides

Hollondaise over Blanched Asparagus by The Little Ferraro Kitchen
Scalloped Potatoes with Milk, Cheese, and Garlic (Gratin Dauphinois) by Home Cooking Memories
Ratatouille by Basic N Delicious
French-style country pate by There and Back Again
White Bean Dip with Homemade Tortilla Chips Momma’s Meals
Oeufs à la Diable by What Smells So Good?
Soubise by The Weekend Gourmet
Ratatouille by Cupcakes and Kale Chips [10]

#CookForJulia Desserts

#cookforJulia badge [11]Frozen Chocolate Mousse by Big Bear’s Wife [12]
Cream Cheese and Lemon Flan by Juanita’s Cocina
Strawberry Sherbert in Cooky Cups by Cravings of a Lunatic
Creme Brulee by Wine Everyday
Mousseline Au Chocolat by Small Wallet Big Appetite
Peach Tarte Tatin by That Skinny Chick Can Bake
Cinnamon Toast Flan by Vintage Kitchen Notes
Dark Chocolate Crepes by Family Spice
Crepes Fines Sucrees by Mangoes and Chutney
Pommes Rosemarie:Apples Rosie  The Daily Dish Recipes
Espresso Soufflé by Chocolate Moosey
Best Ever Brownies by In the Kitchen with Audrey
Orange-Almond Jelly Roll Cake by Mrs. Mama Hen
Orange Spongecake Cupcakes by Mama’s Blissful Bites
Orange Mousse with Greek Yogurt by Sue’s Nutrition Buzz [13]

Wine Pairings: Relishing Food and Wine; Thanks to Julia Child! by ENOFYLZ [14]