Fetuccini Alfredo With Mushrooms and Clams

1 tablespoon butter
8 ounces fresh mushrooms, sliced
3 bunches green onions,
 green part only chopped1/2 teaspoon salt
2 cups of clams
2 cups bell pepper green,yellow,red
1/4 teaspoon pepper
1/2 teaspoon garlic powder
10 ounces fettuccine
1/2 cup butter
1 egg yolk
2/3 cup half-and-half
2 teaspoons dried parsley
1/2 cup parmesan cheese, shredded
1/4 teaspoon salt
1/4 teaspoon pepper
1/2 teaspoon paprika
1 teaspoon thyme
1 teaspoon oregano
1/4 teaspoon garlic powder

Directions:
1
Saute mushrooms, green onions,clams,bell pepper, salt, pepper, and garlic powder in the little bit of butter.
2.
In another pan, slowly bring to a low boil the stick of butter, egg yolk, half and half, parsley, salt, pepper,paprika,oregano,thyme and garlic powder.
3
Add parmesan cheese to sauce mixture and cook and stir until thickened.
4
Add sauce to mushroom mixture.
5.
Serve over cooked fettucini.