Line 2 mini loaf pans with plastic wrap.
Whisk together flour, baking soda, and salt. Beat butter and sugar with a mixer on medium speed for 4 minutes. Reduce speed to low. Add eggs and spices. Beat in flour mixture in 3 additions.
Press cookie dough into pans, and cover tightly with plastic wrap. Freeze for 1 1/2 hours (or up to 1 month).
Preheat oven to 400 degrees. Remove dough from 1 pan. Let soften slightly. Cut eight 1/8-inch-thick slices with a sharp knife. Cover remaining dough, and freeze in pan until ready to slice and bake.
Place slices 1 1/2 inches apart on a cookie sheet lined with a nonstick baking mat. Top each with 2 to 3 almond slices. Freeze until firm, 5 minutes. Bake until dark golden brown, 10 minutes. Let cool on sheet on a wire rack. Repeat.