01 -
Preheat oven to 190°C (375°F) and lightly grease a 33 x 23 cm casserole dish.
02 -
Bring a large pot of water to the boil. Stir in chicken bouillon powder and add elbow macaroni. Cook until al dente according to package instructions, then drain.
03 -
In a large mixing bowl, whisk together melted butter, milk, heavy whipping cream, and eggs. Season with salt and black pepper. Whisk until well combined.
04 -
Add drained macaroni, sour cream, and 540 g of the combined grated cheeses into the custard mixture. Stir until pasta is evenly coated and cheese is distributed.
05 -
Transfer the macaroni mixture to the prepared casserole dish. Top evenly with the remaining cheeses. Sprinkle paprika over the surface.
06 -
Bake on the centre rack for 35–45 minutes, until the top is bubbly and lightly golden brown.
07 -
Allow the dish to rest for 15 minutes before serving to set and ease scooping.