Step 1

Melt the butter in a saucepan over medium heat on the stove.

Step 2

Add the celery and green onions to the saucepan, and saute until beginning to soften.

Step 3

Stir in the flour, and saute for another minute.

Step 4

Heat the milk in the microwave until warm, and pour into the saucepan. Whisk to combine completely until all lumps are gone.

Step 5

Whisk in the heavy whipping cream, tomato paste, Old Bay seasoning and salt and pepper to taste.

Step 6

Bring to a low simmer, and continue to cook until the bisque thickens.

Step 7

Stir in the shrimp and crab meat, and cook until heated through.

Step 8

Serve topped with fresh parsley for garnish.