In a large pot, add sweet potatoes and enough cold water to cover. Cover with a lid and bring to a boil. Reduce heat to low and cook for 15 minutes or until potatoes are fork tender. Drain potatoes very well by holding onto the lid and leaving a small opening or in a colander.
In a small saucepan, bring milk to a boil. Don’t walk away to prevent milk from running.
Add butter, milk, maple syrup, garlic, cinnamon and pepper to cooked sweet potatoes. Mash with a potato masher until smooth. You can also use an immersion blender or food processor.
Serve warm with melted butter and rosemary garnish on top.
Notes
Store: Refrigerate leftovers in an airtight container for up to 3 days.
Freeze: Freeze in portions with future use in mind in an airtight container for up to 3 months. Thaw on a counter for 4-5 hours or in the fridge overnight. Warm up on the stove on low with a splash of milk.
Make ahead: Refrigerate peeled and cubed potatoes in a bowl with cold water for up to 2 days. Cook as per recipe.
Instant Pot: You can also cook whole sweet potatoes in Instant Pot for 15 minutes on high pressure with Natural Pressure Release. Then let them cool a bit, scoop out the flesh and proceed with the recipe. Or cook cubed sweet potatoes with 1 cup water on high pressure for 7 minutes.