Spicy Creamy Cajun Shrimp Pasta

This definitely had a kick.  Cut back on the Cajun seasoning if it's too much.  Eric said it reminded him of our trip to New Orleans :)  I'll take that as a compliment.

1/2 lb penne pasta
1/4 c butter
1/2 lb shrimp, peeled and deveined
1 clove garlic, minced
1/4 c all purpose flour
1/2 red pepper, diced
1/4 tsp red pepper flakes
1 tbsp Cajun seasoning
2 c milk
1/4 tsp salt
1/4 tsp black pepper
1/4 c parmesan cheese, shredded

Cook pasta according to package instructions.  Melt butter in a large skillet over medium heat.  Saute shrimp for 1 minute on each side.  Stir in garlic and cook for 1 minute.  Remove shrimp with a slotted spoon, being sure to leave the butter in the pan.  Add red pepper to pan and cook for 2-3 minutes.  Stir in flour, red pepper flakes, and cajun seasoning.  Cook for 2 minutes, stirring constantly.  Gradually whisk in milk and turn up heat; cook until thickened.  Stir in parmesan cheese.  Remove from heat.  Season with salt and pepper.  Toss sauce with cooked pasta and add shrimp.  Serves 2.