01 - Preheat oven to 350°F. Grease a 9x5-inch loaf pan and line with parchment paper, leaving overhang on the long 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 the mixture is smooth and well blended.
04 - Pour the wet ingredient mixture into the dry ingredients. Fold gently with a spatula until just combined, being careful not to overmix, as this can affect the texture of the bread.
05 - Transfer the batter into the prepared loaf pan, smoothing the top with a spatula. Sprinkle evenly with sliced almonds and coarse sugar if desired.
06 - Bake on the center rack for 45 to 55 minutes, or until a toothpick inserted into the center of the loaf comes out clean and the top is golden brown.
07 - Allow the bread to cool in the pan for 10 minutes, then use the parchment overhang to lift it out onto a wire cooling rack. Let cool completely before slicing into 8 to 10 even pieces.