Spinach and Mushroom Casserole Recipe

Ingredients

• 2 tablespoons butter
• 1 pound fresh mushrooms, sliced
• 2 (10 ounce) packages fresh spinach, rinsed and stems removed
• 1 teaspoon salt
• 4 tablespoons butter, melted
• 0.25 cup finely chopped onion
• 1.5 cups shredded Cheddar cheese, divided