Shrimp Pasta Alfredo

This is my version of the delicious Shrimp Pasta Alfredo. This recipe is perfect if you don't have heavy cream available.

To make yours the ingredient list is:
300g Penne
3 cups of milk
1 tsp Black Pepper
1 tsp Italian Seasoning
1 Clove of Garlic
1 Chopped Fresh Pepper (optional non-traditional ingredient)
100g Butter
1 cup grated Cheese
1 Onion Chopped
Salt to taste