Slow Cooker Garlic & Herb Mashed Potatoes

Ingredients

• 2 pounds red potatoes, washed (you don't need to peel them)
• 4 tablespoons butter
• ½ cup sour cream (or you can also use plain Greek yogurt)
• 1 tablespoon minced garlic
• 1 tablespoon finely chopped fresh parsley (or 2 teaspoons dried parsley flakes)
• ½ teaspoon dried or fresh basil
• ¼ teaspoon dried oregano
• 2 teaspoons salt
• 1 teaspoon pepper
• ¼ cup milk