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Dinner · Part 2 of 3: Instructions

Creamy Slow Cooker Roquefort Mussels Step-by-step instructions

A top-down view of fresh mussels, shallots, Roquefort cheese, cream, and wine in a black slow cooker insert.
Prep
Cook
Total
Serves
4

Before you start

Before starting, ensure all mussels are thoroughly cleaned. Scrub the shells under cold running water to remove any debris or barnacles, and pull away the fibrous 'beard' protruding from the shell. Rinse the mussels again and drain well.

Have all remaining ingredients measured and ready to ensure the assembly process is swift and efficient. Ensure the slow cooker insert is clean and properly placed in the base unit before adding any ingredients.

Ingredients at a glance (5)
  • 2 lb fresh mussels, cleaned and debearded
  • 2 tbsp minced shallots
  • 4 oz crumbled Roquefort cheese
  • 1/2 cup heavy cream
  • 1/2 cup dry white wine

Instructions

Preparation and assembly

  1. Prepare the base
    Place the cleaned and debearded mussels at the bottom of the slow cooker ceramic insert. Scatter the minced shallots evenly over the mussels to ensure the flavor permeates the dish during the steaming process.
    Look for Mussels are arranged in a single layer at the bottom of the insert.
    Tip Ensure all mussels are tightly closed before adding them to the cooker.

The mussels are cleaned, debearded, and layered in the slow cooker. The aromatics, cheese, and liquids are added, creating a uniform base ready for the steaming process.

Everything looks fresh and properly distributed before the lid is secured for cooking.

Steaming cycle

  1. Add aromatics and liquid
    Sprinkle the crumbled Roquefort cheese over the mussels. Pour the heavy cream and dry white wine over the cheese and mussels, ensuring the liquid coats the ingredients evenly to create the steaming environment.
    Look for The liquid level should be visible among the mussels without completely submerging them.
    Tip Use a dry white wine like Sauvignon Blanc for the best flavor profile.

The slow cooker is covered and operating on the high setting. The liquid is gently simmering, and the aroma of shallots and blue cheese begins to fill the kitchen. The mussels are undergoing the transition from raw to perfectly steamed.

Final inspection

  1. Steam and finish
    Cover the slow cooker and cook on high for 45 minutes. The mussels are done when they have fully opened; the internal temperature of the shellfish must reach 145°F (63°C). Discard any mussels that remain closed.
    Look for Mussels are opened and the sauce is creamy and fragrant.
    Safe temperature 145°F (63°C) internal temperature (shellfish)
    Tip Do not overcook the mussels, as they will become tough and rubbery.

The lid is lifted to reveal fully opened shells and a luscious, creamy sauce. The temperature is checked to ensure safety. The dish is visually appealing, with the mussels ready for immediate service in warm bowls.

Common mistakes

A common mistake is failing to clean the mussels properly, which can result in a gritty sauce. Another issue is overcooking; mussels are delicate and will lose their tender texture if left in the slow cooker for too long.

Ensure the lid is kept tightly closed during the cooking process to maintain the necessary steam, and avoid adding extra salt, as the Roquefort and the natural sea salt from the mussels are usually sufficient.

How to tell it’s done

The mussels are properly cooked when the shells have opened wide. It is critical to verify that the internal temperature of the shellfish reaches 145°F (63°C).

Any mussels that remain closed after the cooking time should be discarded immediately, as they are not safe to eat. The sauce should be smooth, velvety, and have a rich, creamy consistency that coats the back of a spoon.

  • Shellfish: 145°F (63°C) in the thickest part

Coming up in Part 3: common questions

  • Can frozen mussels be used for this recipe?
  • Why is it important to discard mussels that remain closed?
  • What should be done if the sauce is too salty?

Also in Part 3: variations (Garlic and Herb Version, Spicy Blue Cheese Mussels), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)