Whisk flour, salt, and baking powder in a medium bowl. In a large bowl, beat butter and sugar with an electric mixer until creamy. Beat in egg and vanilla. Add half of dry ingredients to wet ingredients and beat until mixture is almost combined.
Add other half of flour mixture and mix until nearly combined. Add chopped cherries. Mix just until they are evenly distributed in the dough. Cover bowl with plastic wrap and chill the cookie dough. Bake and enjoy!