01 - Preheat oven to 425°F. Line a baking sheet with parchment paper.
02 - In a large mixing bowl, whisk together all-purpose flour, baking powder, baking soda, salt, and cayenne pepper until evenly combined.
03 - Add cubed, cold unsalted butter to bowl. Use a pastry cutter or fingertips to blend until mixture forms coarse crumbs.
04 - Fold in shredded sharp cheddar cheese until evenly distributed.
05 - In a separate small mixing bowl, whisk together canned pumpkin puree and buttermilk until smooth.
06 - Pour wet mixture into flour mixture. Mix gently with spatula until dough is just combined, taking care not to overwork.
07 - Scoop dough by tablespoon, shape into balls, and roll each ball thoroughly in crushed Flamin Hot Cheetos crumbs.
08 - Transfer coated balls to prepared baking sheet, spacing approximately 1 inch apart. Brush tops lightly with melted butter using pastry brush.
09 - Bake in preheated oven for 16 to 18 minutes, until golden and set.
10 - Allow bites to cool slightly on baking sheet before serving.