creamy creole crawfish pasta

Ingredients

• 1 - (12 ounce) package of spaghetti noodles
• 1 stick butter
• 1/3 cup all purpose flour
• 1 - bunch green onions, finely chopped
• 1 - small onion, diced
• 4 - garlic cloves, minced
• 1/2 - green bell pepper, minced
• 2 - celery ribs, minced
• 1 - chicken boullion
• 1 pint whipping cream
• 1 - (2 pound) package of crawfish tails, thawed
• 1 - (10 oz.) can original rotel tomatoes with green chilis, drained
• 1 tablespoon creole seasoning (ex: tony chachere's)
• 1 tablespoon fresh parsley, chopped
• 1/4 teaspoon pepper
• - hot sauce (optional)
• - freshly grated parmesan cheese (optional)
• - fresh parsley sprigs for garnishment, optional