Step 1

To make the fish, grease the slow cooker with butter or cooking spray. Arrange the onion slices in a layer covering the bottom of the pot.

Step 2

Arrange the salmon in a single layer on top of the onions.

Step 3

In a small bowl, stir together the wine, lemon juice, salt, pepper, and garlic. Pour the mixture over the fish.

Step 4

Cover the slow cooker and cook on low for two hours. The salmon should be cooked through and flake easily with a fork.

Step 5

To make the herb salsa, in a small bowl, mix together the shallot and vinegar, and let the mixture stand for 15 to 20 minutes.

Step 6

In a separate small bowl, mix together the parsley, chives, olive oil, salt, and pepper. Strain the shallots, reserving the vinegar, and add them to the herbs. Add a teaspoon or two of the vinegar to the mixture to taste.

Step 7

Serve the fish with the salsa spooned over the top.