router with 1/4 round over and sander
varnish or lacquer.
Cut out scoop first (cut to a depth of 15mm for a tbsp of measure)
Cut rest of scoop out and round over the under side of the scoop leaving top flat.
Cut clip slot on either table saw upright with a jig or with a couple of passes on a band saw till the slot is just before the scoop "cup" starts.
sand and finish with a food safe varnish ,Gloss of satin.