Preheat oven to 450°F.
Prepare Biscuits: Grease large baking sheet. Combine flour, baking powder, baking soda, sugar and salt in large bowl. With pastry blender or two knives, cut in butter until mixture resembles coarse crumbs.
Add buttermilk and TABASCO® Sauce. Stir with fork until evenly moistened and mixture forms a ball. Do not overmix.
On lightly floured surface, knead dough 6 times; pat to 1/2-inch thickness. With 2-inch round cookie cutter, cut dough into rounds. Place biscuits on baking sheet. Combine scraps; cut out more rounds. Brush biscuits with egg. Bake 12 minutes or until golden brown.
Prepare Spicy Honey Mustard: Combine mustard, honey and TABASCO® Sauce in small bowl until well blended.
To serve: Slice biscuits in half. Spread halves with Spicy Honey Mustard; top with a few slices of deli meat, cutting slices to fit. Top with watercress sprigs and remaining biscuit halves. Repeat with remaining ingredients.
Makes approximately 12 biscuits.