Cook the elbow macaroni until al dente. Set aside.
In a bowl add the shrimps and the seasonings. Mix everything together.
Place a skillet/pan over medium heat. When it is warm, melt the butter then cook the shrimps for 3-5 minutes on each sides. Remove from the heat and set aside.
In a medium sauce pan over medium-low heat, melt the butter and cook the pimento peppers then stir in the flour. Let it cook for at least 1 minute.
Gradually stir in the milk then add the fresh thyme and let that simmer for 2-3 minutes.
Stir in the seasonings along with the cheese :parmesan, cream cheese and 1 cup gouda/gruyère.
Stir everything together and let it simmer for 5-7 minutes. Making sure to stir regularly.
Preheat your oven to 180°C/375°F.
In a large bowl, mix together the cheese sauce, crab meat and shrimps. Add everything to a greased baking dish then sprinkle the 1/2 cup gouda/gruyère cheese on top.
Bake for 30-35 minutes then broil for 5-7 minutes on 200°C/400°F.