01 - Preheat oven to 350°F. Grease a 9x5-inch loaf pan and line with parchment paper, leaving overhang on the sides for easy removal.
02 - In a large mixing bowl, whisk together the gluten-free flour, granulated sugar, baking powder, baking soda, sea salt, ground cardamom, and grated orange zest until evenly distributed.
03 - In a separate bowl, beat the eggs thoroughly. Whisk in the freshly squeezed orange juice, neutral oil, and vanilla extract until smooth and well incorporated.
04 - Pour the wet mixture into the dry ingredients. Fold gently with a spatula until just combined—avoid overmixing to maintain a tender crumb.
05 - Pour the batter into the prepared loaf pan and smooth the top with a spatula. Sprinkle evenly with sliced almonds and coarse sugar, if desired.
06 - Bake on the center rack for 45–55 minutes, or until a toothpick inserted into the center of the loaf comes out clean. Tent loosely with foil if the top browns too quickly.
07 - Allow the bread to cool in the pan for 10 minutes. Lift out using the parchment overhang and transfer to a wire cooling rack. Let cool completely before slicing into 8–10 even pieces.