Pulled Pork Chilaquiles

Ingredients (7)

• + 2 tablespoons unsalted butter add to pantry
• + 1 yellow onion, thinly sliced add to pantry
• + ½ (16 ounce) jar tomatillo salsa add to pantry
• + 1 cup chicken stock add to pantry
• + 8 cups tortilla chips add to pantry
• + 2 ½ cups shredded aged Cheddar cheese (such as Beecher's Flagship) add to pantry
• ✓ 2 cups citrus-braised pulled pork