01 -  Preheat oven to 375°F. Lightly grease a 9x5-inch loaf pan and line with parchment paper for easy release. 
 02 -  In a large mixing bowl, whisk together the flour, baking powder, baking soda, salt, and ground ginger until thoroughly blended. 
 03 -  Add cold cubed butter to the dry mixture. Cut in using a pastry blender, fork, or fingertips until pea-sized crumbs form. 
 04 -  Fold shredded cheddar cheese and finely diced jalapeños into the mixture, ensuring even distribution. 
 05 -  In a separate bowl, whisk together egg, maple syrup, buttermilk, and vanilla extract until smooth. 
 06 -  Pour wet ingredients into the dry mixture. Using a spatula, gently stir until just combined, taking care not to overmix. 
 07 -  Spoon batter into prepared loaf pan, smoothing the surface evenly. 
 08 -  Top with extra cheese and sliced jalapeños if desired for visual appeal. 
 09 -  Bake on the center rack for 35 to 40 minutes, or until a toothpick inserted in the center emerges with a few moist crumbs. 
 10 -  Allow loaf to cool in the pan for 10 minutes. Transfer to a wire rack and cool completely before slicing into portions.