Baked Homemade Macaroni and Cheese

INGREDIENTS

• 2 1/2 cups elbow macaroni
• 1/4 cup butter
• 1/4 cup all-purpose flour
• 4 cups milk
• 1/2 teaspoon salt
• 1 pound shredded Cheddar cheese
• 1/4 cup butter, melted
• 1 sleeve buttery round crackers, crushed