This is even better the next day!

1 (12 ounce) package vermicelli spaghetti
1 pound shrimp, cooked, cleaned, cut into bite-size pieces
1 (6 ounce) can sliced mushrooms, drained
3/4 cup margarine, melted
8 ounces shredded Cheddar cheese
1/4 cup grated Parmesan cheese
1 tablespoon plus 1 teaspoon garlic powder
Salt, to taste
Cracked pepper, to taste

In large saucepan, break spaghetti in half and cook according to package directions.

While spaghetti is cooking, prepare remaining ingredients so they can be added immediately. Drain spaghetti and put back in saucepan. Add remaining ingredients. Toss like salad until cheese is melted.

Serve immediately.