Since my family doesn't like nuts, I added a scant 1/4 cup of almond meal to the batter instead of sprinkling the nuts. This was akin to shortbread and was quite tasty! I too had trouble with the indentations. I used the handle of my wooden spoon; next time I'll use my finger and won't be concerned about the "hole" seeming too big. Made and reviewed for ZWT4.
This created a neat cookie! I don't know what happened, but I had trouble with the indentions. When I brushed the raw cookies with egg, the holes were filled in. Then, the nuts filled the hole too. Then when baking, the holes went away completely. I ended up tapping the cookies towards the last 10 minutes of baking so they would have some place for the jam to go. With all that said, they were good cookies! Thanks for posting! Made for ZWT4 - Chic Chefs.