Step 1

Preheat your oven to 350F (180°C).

Step 2

Cut the broccoli into florets, grate the cheese, and mince the garlic.

Step 3

Add the butter, cream cheese, and cream to a pot over medium heat. Stir occasionally until everything has melted together.

Step 4

Turn down the heat and add the grated cheeses, garlic, mustard, basil, salt, and pepper. Stir well until the cheese has melted completely and the mixture is smooth and creamy.

Step 5

Add the broccoli florets to a square casserole dish and spread them around evenly.

Step 6

Pour the melted cheese sauce over the broccoli florets and stir to combine, ensuring all of the broccoli florets are well-coated.

Step 7

Sprinkle a handful of grated mozzarella cheese on top.

Step 8

Bake for 30 minutes at 350F until the top is bubbly and slightly browned. Remove from the oven and allow to cool for 5-10 minutes before serving.