Slow-Cooker Garlic-Herb Mashed Cauliflower

Ingredients

• 1 head cauliflower, cut into bite-size pieces
• 5 garlic cloves, smashed and peeled
• 4 cups vegetable broth
• 3 tablespoons butter, cut into cubes
• ⅓ cup Greek yogurt
• 2 tablespoons chopped fresh chives
• 1 tablespoon chopped fresh parsley
• 1 tablespoon chopped fresh rosemary
• 1 teaspoon garlic powder
• Salt and freshly ground black pepper