Slow Cooker Potato Soup

Bahan-bahan (8 porsi)

• 6 slices cooked bacon*, diced
• 3 -4 cups good-quality chicken or vegetable stock
• 2 pounds Yukon gold potatoes**, peeled (if desired) and diced
• 1 medium white or yellow onion, peeled and diced
• 4 tablespoons bacon grease* (or butter)
• 1/3 cup all-purpose flour
• 1 (12-ounce) can 2% evaporated milk
• 1 cup shredded reduced-fat sharp cheddar cheese
• 1/2 cup plain low-fat Greek yogurt or low-fat sour cream
• 1 teaspoon Kosher salt, or more to taste
• 1/2 teaspoon freshly-cracked black pepper
• optional toppings: thinly-sliced green onions or chives, extra shredded cheese, extra bacon, sour cream