Spicy Keto Chicken-and-Cheese Casserole

Ingredients (8)

• + 1 teaspoon butter, or as needed add to pantry
• + 4 skinless, boneless chicken breasts, cut into chunks add to pantry
• ✓ 1 teaspoon taco seasoning mix, or to taste
• + 1 (8 ounce) jar salsa add to pantry
• + ½ cup sour cream add to pantry
• + 4 ounces jalapeno peppers, diced add to pantry
• + 4 ounces shredded Cheddar cheese add to pantry
• + 4 green onions, sliced add to pantry