In a medium bowl, combine yogurt and baking soda -- mix well and set aside for 10 minutes until nearly doubled in size.
1 cup Plain Yogurt, preferably whole milk, 2½ teaspoons Baking soda
In a large mixing bowl, combine semolina, melted butter, sugar, melted butter and stir well to combine. Set aside.
3 cups Semolina flour, ¾ cup Sugar, ¾ cup (1½ sticks) Unsalted Butter, melted plus more for coating the pan
Pour the yogurt over the semolina mixture and mix well to combine. Transfer the batter to the prepared pan and press into an even layer.
Use a knife to score the surface of the namoura on the diagonal into 2" diamon-shaped pieces. Top each diamond in the center with an almond.
¼ cup Slivered or Whole Almonds
Bake until golden brown, 25~30 minutes.
Place the baking dish on a wire rack and drizzle the cooled syrup over the top of the hot namoura. Let cool completely before recutting along the scored lines and serving.