Preheat oven to 450° F. In a small skillet, melt 1 tbsp of the butter over medium heat and sauté the onion and garlic for 5 minutes, stirring occasionally. Remove from heat and cool completely.
In a medium-sized bowl, mix together the flour, baking powder, salt, and baking soda. Cut in the shortening with a pastry blender. (Particles of the shortening should remain.) Stir in the buttermilk, almonds, parsley, and herbs to make a soft dough.
Turn out the dough onto a lightly floured surface and knead just until the dough comes together. Pat or roll out the dough to 1/2-inch thickness and cut out the biscuits with a round biscuit cutter. Place on an ungreased baking sheet, 1 inch apart, and bake for 10 - 15 minutes or until golden brown.
In a small saucepan, melt the remaining butter. Remove the biscuits from the oven and brush the tops with the butter. Serve hot or warm.