I've always told people that this is an old family recipe that I got from my aunt and I have been making it for decades. It is truly loved by everyone and often requested for family gatherings. The funny thing is that I "remember" getting it from my aunt, but when I made it for her, she told me it's nothing like her recipe. LOL!!! She did love it though.
In heavy medium sauce pan slowly heat water, 1/2 Cup butter, and 1/2 teaspoon salt until butter is completely melted. Bring to boil and turn off heat.
Immediately add the flour all at once and stir vigorously until well mixed.
Add 4 whole eggs, one at a time, beating thorougly until completely combined after each egg.
Spread onto ungreased cookie sheet (pretty much fills a 15" X 11" cookie sheet).
Bake for about 25-30 minutes in preheated 375 F oven. Remove from oven and let cool completely.
FROSTING: In medium bowl thoroughly whip 1/2 cup soft butter, powdered sugar, almond and vanilla extracts, and 1/2 teaspoon salt (don't omit salt). Add milk as needed to achieve desired frosting consistency.
Frost cooled pastry (using all or only part of frosting as desired for personal taste). Sprinkle sliced almonds over fresh frosting. Cut into twenty pieces ~ ENJOY!