Macaroni and Cheese Bake

Ingredients

• 4 slices white sandwich bread
• 4 tablespoons butter (55 grams) melted
• 1/4 cup grated Parmesan cheese (35 grams)
• 5 tbsp all-purpose flour (45 grams)
• 1 lb elbow macaroni (450 grams)
• 3 12-oz cans evaporated milk (1 L)
• 5 oz. American cheese (140 g)
• 8 oz. extra sharp cheddar cheese (225 g)
• 3 oz. Monterey Jack cheese (85 g)
• 1/8 tsp ground nutmeg (0.3 g)
• 1 tsp ground mustard seed (3.3 g)
• 2 tsp table salt (12 g)
• 4 tbsp butter (55 g) melted
• 1 teaspoon hot sauce