Heat oven to 375 degrees.
Cream butter, sugars, eggs, vanilla, and ketchup thoroughly.
Stir in flour, soda and salt. Fold in gumdrops.
Drop dough by scant ¼ cupfuls 2 inches apart on greased and floured baking sheet (or you can line with parchment paper).
Bake 15-17 mins or until golden brown.
Makes 1½ to 2 doz cookies.