Mac & cheese with chips & Parmesan crumble - Trois fois par jour

Ingredients

• 3 tablespoons all-purpose flour
• 1 tablespoon mustard powder
• 1 teaspoon ground nutmeg
• 3 tablespoons butter
• 1 French shallot, minced
• 1 clove garlic, minced
• 4 cups milk
• Salt and pepper, to taste
• 16 oz (1 package) macaroni
• 4 thick slices bacon, cut into pieces
• 3 cups cheese, grated (old cheddar, mozzarella, Gruyère)
• 1 cup Tostitos, crushed
• 1/2 cup fresh Parmesan cheese, grated