In bowl of mixer stand, combine butter and brown sugar, mix on low until well creamed.
Add vanilla and egg, mix about another minute, scraping bowl with soft rubber spatula to ensure egg is well incorporated into dough.
Add zest and juice of orange along with chocolate shavings. Mix briefly.
In separate bowl combine flour and baking soda, stir together.
Gradually add flour mixture to wet ingredients in stand mixer.
Mix on low speed until ingredients are thoroughly combined, about 1 minute.
Use tablespoon to scoop cookie dough o baking sheet and bake for 12 to 14 minutes.
Notes
For a tasty and eye appealing garnish, reserve a small amount of the chocolate shavings and orange zest. Combine the two and sprinkle a pinch over each cookie, while they cool on a wire rack.