01 -
Preheat your oven to 350°F (175°C).
02 -
In a large mixing bowl, combine cake mix, flour, cocoa powder, coffee, vegetable oil, eggs, sour cream, sugar, salt, and vanilla extract. Mix thoroughly with a hand mixer or whisk, scraping the bowl as needed to ensure all ingredients are incorporated.
03 -
Grease a mini muffin pan and pour the batter into each tin, leaving slight room at the top. Bake in two rounds if necessary.
04 -
Bake the mini muffins for 12-15 minutes. Test doneness by inserting a toothpick in the center; it should come out clean or with a few moist crumbs. Let them cool for a few minutes, then transfer to a wire rack.
05 -
In a saucepan, melt butter over medium heat, then stir in cocoa powder and heavy cream. Bring the mixture to a boil, then remove from heat.
06 -
Add vanilla extract, powdered sugar, and chopped pecans to the mixture. Stir or blend with a hand mixer as needed to achieve a smooth, spreadable consistency.
07 -
While the cake bites are still warm, drizzle one tablespoon of frosting over each bite. Work quickly to ensure the frosting sets evenly before hardening.