Place the garlic, 1 1/2 cups heavy cream, 1 cup low-sodium vegetable or chicken broth, 1 1/4 teaspoons kosher salt, and 1/4 teaspoon black pepper in a large skillet. Bring to a simmer over medium heat, stirring to combine. Add 20 ounces refrigerated or frozen cheese tortellini (it will be halfway submerged in the sauce). Cook, stirring frequently to prevent the tortellini from sticking, for 3 minutes for refrigerated tortellini or 7 minutes for frozen tortellini.
