Preheat oven to 350°. Line 2 (24-well) miniature muffin pans with paper liners.
In a large bowl, beat together butter and sugar with a mixer at medium speed until fluffy, 3 to 4 minutes, stopping to scrape sides of bowl. Add eggs, one at a time, beating well after each addition. Beat in vanilla extract.
In a medium bowl, stir together flour, cocoa, cinnamon, chile pepper, baking powder, and salt. With mixer at low speed, gradually add flour mixture to butter mixture alternately with sour cream, beginning and ending with flour mixture, beating just until combined after each addition. Using a 2-teaspoon levered scoop, spoon dough into prepared muffin pans. • Bake until a wooden pick inserted in centers comes out clean, approximately 15 minutes. Let cool completely on a wire rack. Pipe Crema Fresca Frosting onto cooled cupcakes. Serve immediately.
Recipe by TeaTime Magazine at https://teatimemagazine.com/mini-mexican-chocolate-cupcakes/