After several failed recipe attempts, I finally did it. I came up with a way to make mashed potatoes in the slow cooker. Im so excited. This will definitely help on. Peeled garlic adds even more flavor to these mashed potatoes recipe from Martha Stewart. To make ahead, complete garlic mashed potatoes recipe, then top with a thin. Jicama Fries here. There are 237 calories in 1 cup 7. Mashed Potatoes, homeprepared, with whole milk margarine. Youd need to walk 62 minutes to burn 237 calories.