Whisk together Boursin or cream cheese spread and milk. Stir in 1 cup shredded cheddar cheese, black pepper, scallions, and chopped kale. Spread mixture in bottom of 9x9 pan.
Arrange potato puffs in rows on top of cheese; top with remaining cheddar cheese.
Bake for 35 - 40 minutes until potatoes are crisp and cheese is bubbly. Allow to stand 5 minutes before serving.