Cream butter and sugar together adding eggs until well-combined. Add flavorings. Combine flour, salt and baking powder together. Gradually add the flour mixture to the creamed mixture alternately with the sour cream.
Roll into balls and (shape into eggs by 'pinching' one end. Bake at 375 degrees for approximately 10-15 minutes. Cool. Dust with sugar or glaze.
2 cups confectioners sugar, mixed with 1-2 teaspoons of milk (just enough to create creamy). Divide into cups and add a few drops of different colors of food coloring in each cup. Stir until well-combined. Drizzle with a spoon or decorate in a decorator bag. Add Sprinkles!