Preheat your oven to 300 degrees F (150 degrees C).
Cream the butter, sugar, vanilla and vinegar/lemon juice together in a large bowl. Add in the next 4 ingredients and stir until just combined.
Divide the dough into 1" balls, roll the dough balls into 2 1/4" long sausage shapes, place onto a lined cookie sheet.
Flatten the sausages of dough into oval shapes (see notes) - about 1/4 inch thick, spaced 1/2" apart on the cookie sheet.
Bake for 17-20 minutes until they are a light golden brown. Allow to cool on a wire rack.
Once cooled, spread about 1/2 tsp of melted (tempered if you can be bothered) chocolate onto the bottom of each cookie (you can use a pastry brush, pallette knife or butter knife), and sprinkle with your desired toppings. Let the chocolate set at room temperature. Store in an airtight container.