Appetizer Shrimp Puffs

Melt butter in a saucepan with water. Bring to a full boil over medium heat. Immediately stir in flour and garlic salt all at once. Stir vigorously until the dough forms a ball and leaves the sides of the pan, about 1 minute. Remove from heat and let stand for 5 minutes. Stir in eggs, one at a time, blending well after each addition. Stir in cooked, chopped shrimp, sliced green onions, and 3 tablespoons grated Parmesan cheese. Drop by spoonfuls about 2-inch apart on ungreased cookie sheets. Sprinkle with 2 tablespoons grated Parmesan cheese. Bake in a 400 °F (205 °C) oven for 25 to 30 minutes, or until puffed and golden brown.