Tieghan Gerard on Instagram: "My go-to, make-ahead Crockpot Cheesy Mashed Potatoes with Caramelized Onions. On oldie recipe, but such a goodie. I find myself making these year after year. They are perfectly smooth, creamy, and so delicious. The onions mixed in make all the difference. If you have not tried them yet, Thanksgiving is here. It’s time! 5 pounds Russet or Yukon Gold potatoes, peeled and quartered 2 cups water 2-4 cloves garlic 2 teaspoons kosher salt 1 stick (1/2 cup) salted butter 1