Slow Cooker Cream of Leek Soup

Cream of Leek Soup:

• 4 medium leek white and pale green parts, roughly chopped
• 1 medium yellow onion peeled and roughly chopped
• 1 large russet potato or 2 smaller ones, approx. 1.25-1.5 lbs, peeled and roughly chopped
• 2 cloves garlic cloves, peeled
• 1 medium leaf dried or fresh
• 1 tsp dried thyme or 2 tsp fresh thyme leaves
• 1 tsp salt
• 1/2 tsp black pepper ground
• 6 cups chicken broth or vegetable broth
• 1/2 cups whipping cream

Chorizo Croutons:

• 3-4 links chorizo sausage casings removed and crumbled into large chunks