Cook the macaroni: Bring a large pot of salted water to a boil. Add the elbow macaroni and cook until al dente, following package instructions. Drain and set aside.

Make the cheese sauce: In a large saucepan, melt the butter over medium heat. Add the flour and whisk continuously for about 2 minutes, until the mixture turns golden.

Add the milk: Gradually pour in the milk while whisking, ensuring no lumps form. Continue to cook and stir until the sauce thickens, about 5 minutes.

Add cheese and seasonings: Remove the saucepan from heat and add the shredded cheddar cheese, salt, black pepper, and mustard powder. Stir until the cheese is melted and the sauce is smooth.

Incorporate spinach and food coloring: Stir in the chopped spinach for a healthy twist and, if desired, add a few drops of green food coloring to give the mac and cheese that perfect Halloween hue.

Combine macaroni and cheese sauce: Add the cooked macaroni to the cheese sauce and mix until well-coated.

Prepare for baking: Preheat your oven to 350°F (175°C). Pour the mac and cheese mixture into the miniature cauldron bowls. Sprinkle the top with mozzarella cheese and cracker crumbs for an extra crunchy topping.

Bake: Place the cauldrons on a baking sheet and bake in the preheated oven for 15-20 minutes, or until the top is golden and bubbly.

Serve: Carefully remove the cauldrons from the oven. Allow them to cool slightly before serving. Enjoy your Halloween Cauldron Mac and Cheese while it’s warm!