• Cook 2 1/2 cups macaroni in boiling water. When water starts to boil add spinach. Drain water when noodles are cooked and set aside.
• Pre-heat oven to 400 degrees F.
• Melt butter in a saucepan over high heat and add flour. Whisk together to create a roux.
• Stir in garlic until fragrant and pour in milk. Bring all contents to a boil then reduce heat.
• Add cheddar & gruyere cheese to saucepan. Stir cheese until sauce thickens then remove from heat.
• Add egg and egg white into cheese sauce and mix well.
• Add 4 cups of cooked macaroni noodles into cheese sauce. Stir until noodles are completely covered. Stir in diced, cooked shrimp.
• Generously spray a 12 cup muffin pan with non-stick spray and evenly fill each space with a large spoonful of macaroni. Each pan should be filled to the top.
• Bake in oven at 400 degrees for 10 - 15 minutes. Let cool completely before removing from pan and serving.