In a large mixing bowl, combine the soft butter and peanut butter. Mix until smooth.
1/2 cup butter (softened), 1 1/4 cups creamy peanut butter
Add the powdered sugar and salt and mix well until smooth and creamy.
2 cups powdered sugar, 1/8 teaspoon salt
Wrap the peanut butter mixture in parchment paper and refrigerate until chilled. (Chill for at least an hour or more to make it more manageable to shape.)
Cut or shape the mixture into eggs, any size you desire. ( I prefer them about 1/2 - 3/4" thick and use a 2" cutter.)
Place them on a parchment-lined tray and freeze for approximately 15 minutes. (You want them cold and firm but not completely frozen.) Eggs can also be covered and refrigerated overnight before dipping.
Place the chocolate in a microwave-safe bowl and microwave at 30-second intervals until smooth and melted. If it doesn't get thin and smooth enough, you can add a bit of Crisco shortening. Alternatively, you can melt the chocolate in a double-boiler.
10-12 ounces melting chocolate for coating (approx. 2 cups chocolate chips)
Carefully dip each chilled egg into the chocolate using a fork or dipping tools. Tap lightly against the side of the bowl to remove excess chocolate. Place the eggs onto a parchment-paper-lined tray and refrigerate to harden.
Decorate as desired with extra drizzles, sprinkles, etc. (Sprinkles will need to be added before chocolate hardens.)
Store in a closed container in the refrigerator. (They're best when they are cold.)