Preheat oven to 375°.
Soften butter in oven-proof bowl in preheating oven for 1 to 2 minutes.
Blend together softened butter, cream cheese, and chopped olives.
Unroll and separate crescent rolls into triangles.
Spread with cheese mixture; sprinkle with parsley.
Place on baking sheet, seam side down, and brush with beaten egg.
Bake in 375° oven 10 to 13 minutes.
Serve warm or allow to cool 10 minutes.