- Preheat the oven to 400°F. Spray a 24-cavity mini muffin pan with non-stick spray. Set aside. 
- Place the all-purpose flour, baking soda, salt, and Dutch-process cocoa powder in a medium bowl. Then, using a whisk, combine the dry ingredients. Set the bowl aside until ready to use. 
- Place the Crisco shortening and unsalted Kerrygold Irish butter in a large bowl, and using an electric hand mixer, beat them together. 
- Add the granulated sugar and beat for about 2 minutes until light and fluffy. 
- Add the egg and vanilla extract and beat for about 2 minutes until light and creamy. 
- Add the dry ingredients to the wet ingredients and beat until well combined. 
- Using a small ice cream scoop, place about 2 tablespoons of dough into each of the wells of the prepared mini muffin pan. Then, using your fingers, press the dough down so that it fills the entire cavity.  
- Bake in a 400°F oven for 10-12 minutes, then transfer the pan to a wire rack when the cookie cups are done. 
- Immediately press a Rolo chocolate candy into the center of each cookie cup.  
- Allow them to cool for 10-15 minutes in the pan, then remove them from the pan and transfer to a wire rack to finish cooling completely.