Spinach and Feta Mashed Cauliflower

http://www.closetcooking.com/2014/10/spinach-and-feta-mashed-cauliflower.html 

ingredients

• 1 medium head cauliflower, cut into small florets
• 2 tablespoons butter
• 1/4 cup Greek yogurt or sour cream or cream cheese
• 5 ounces spinach (cooked fresh cooked or thawed frozen), squeezed of excess liquid and coarsely chopped
• 1/2 cup feta, crumbled
• 2 green onions, sliced
• 2 tablespoons dill, chopped or 2 teaspoons dried dill
• milk to taste
• salt and pepper to taste