Slow Cooker Provençal Mussels with Crushed Tomatoes Step-by-step instructions

Before you start

Start by thoroughly cleaning the mussels. Scrub the shells under cold running water to remove any grit, barnacles, or debris. Use a small knife to pull off the fibrous beard that may be sticking out of the shell.

Discard any mussels that have broken shells or that do not close when tapped. Finely chop the yellow onion to ensure it softens evenly during the cooking process. Measure out the herbs and have the crushed tomatoes ready to pour, ensuring a seamless assembly process.

Instructions

Initial Assembly

1. 1Prepare the Base
   Place the cleaned fresh mussels into the bottom of the slow cooker bowl. Scatter the finely chopped onion evenly over the mussels to ensure the flavor permeates as they steam.
   Look for The mussels should be arranged in an even layer at the bottom of the vessel.
   Tip Ensure the mussels are thoroughly scrubbed and any beards removed before adding them to the pot.

The fresh mussels are thoroughly cleaned and arranged in a single layer at the bottom of the slow cooker bowl. The finely chopped onion is scattered evenly over the top, ensuring everything is prepared correctly before the seasoning begins, and the workstation is left clean and organized for the next step.

Seasoning and Steaming

2. 2Season and Add Sauce
   Sprinkle the herbes de Provence over the onion and mussels. Pour the crushed tomatoes over the top, ensuring everything is well-coated in the sauce. Cover the slow cooker with its lid.
   Look for The tomatoes should cover the mussels partially to create enough moisture for steaming.
   Tip Do not stir too vigorously, as the mussels are delicate and may break if handled roughly during cooking.

The dried herbs de Provence are sprinkled over the onion and mussels, followed by the crushed tomatoes. The lid is secured tightly, and the slow cooker is set to the appropriate low heat setting to begin the gentle steaming process, ensuring the environment is sealed to allow the flavors to meld together properly.

Final Cooking

3. 3Cook and Serve
   Cook on low for approximately two hours. The mussels are done when they have opened fully and reached an internal temperature of 145°F (63°C). Serve immediately while steaming hot.
   Look for The shells will be fully opened and the sauce will be aromatic and bubbling.
   Safe temperature 145°F (63°C) internal temperature (shellfish)
   Tip Discard any mussels that remain closed after the cooking time is complete.

The mussels have fully opened their shells, indicating they are cooked through.

The tomato sauce is fragrant and bubbling, and the internal temperature of the shellfish has reached the required safety threshold of 145 degrees Fahrenheit, confirming that the dish is ready to be served immediately while hot and fresh.

Common mistakes

A common mistake is failing to clean the mussels properly, which can introduce grit into the final dish. Another error is overcooking the mussels, which will cause them to shrink and become tough and rubbery.

Ensure the slow cooker is set to the correct heat setting, as cooking on high for too long can lead to uneven results. Finally, never force open any mussels that remain closed after cooking, as this is a sign they were not fresh or did not cook through properly.

How to tell it’s done

The mussels are perfectly cooked when the shells have opened wide, indicating that the heat has penetrated the shellfish completely. The flesh should be opaque, tender, and plump. Ensure the internal temperature of the shellfish reaches 145°F (63°C) to confirm they are safe to consume.

If any mussels remain tightly closed after the recommended cooking time, discard them immediately, as they are not safe to eat. The sauce should be fragrant and consistent in texture.

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