Crockpot Crab and Corn Soup

From a recipe by Stephanie O'Dea at A Year of Slow Cooking.

• Ready In: 8 hrs 20 mins
• Serves: 6

Ingredients

• 1  quart chicken broth
• 1  tablespoon butter
• 1  cup  finely chopped onions or 1  tablespoon  dried minced  onion flakes
• 1 (32 ounce) package frozen corn
• 2  garlic cloves, chopped
• 1  teaspoon kosher salt
• 1⁄2 teaspoon cayenne pepper
• 1 (6 ounce) can lump crabmeat, drained and picked through
• 1  cup half-and-half or 1  cup heavy cream
• 1  avocado, sliced

Directions

1. Use a 4-quart slow cooker. Pour the broth into your crockpot, and add butter and onion. Stir in frozen corn, garlic, butter, cayenne, and the crabmeat (make sure you pick through canned crab--shells often occur!) Cover and cook on low for 8 hours, high for 4 hours, or until the onion is cooked through and translucent.
2. If you'd like a thicker broth, pulse a few times with an immersible blender, or scoop out a cup or so and blend in a traditional stand blender, then stir it back inches Add half and half or cream. Stir well, and ladle into bowls or bread bowls, and garnish with avocado slices.