Make the chocolate shells first. Set the paper baking cups in the indentations of a miniature muffin pan. If you don’t have a mini muffin pan, you can skip it and just set the cups on a tray.

Combine the ¾ cup of chocolate chips and the 5 oz milk chocolate in a microwave-safe bowl. Melt in the microwave using 50% power and stirring every 30 seconds. Spoon a little bit of the mixture into each miniature cup dividing evenly among 32 cups. Gently spread chocolate a little over halfway up the sides with the back of a small measuring spoon. Put the cups in the freezer and make the filling.

Filling: Melt butter over low heat in a saucepan. Add the 1 cup of semisweet chocolate chips and 5 ounces of milk chocolate to melted butter and stir until chocolate is melted and mixture is smooth. Remove from heat and add your favorite flavor extract. Let cool for about 10 minutes.

In a mixing bowl, using an electric mixer, beat eggs and salt on high speed until foamy and lemon colored. With the mixer going, gradually add melted chocolate mixture about 1 tablespoon at a time, until mixture thickens to about the consistency of mayonnaise. This should take about 5 minutes. The mixture thickens as it cools and should get to about the consistency of mayonnaise. If it is runny, put the bowl in the refrigerator for 5 minutes and then continue beating.

Using a heaping tablespoon of filling, fill the chilled baking cups with chocolate mixture, piling it in the center. Sprinkle top with toasted nuts, sprinkles or Heath bits. Freeze for 2 hours or overnight hours.

To serve, remove from the freezer and allow the cups to thaw a bit so that they are cold, but not frozen. They can be kept at room temperature for a few hours, but be sure to store them in an airtight container or freezer bag in the freezer.