Preheat the oven to 350F and line a baking sheet with parchment paper or a silicone pad.
In a large bowl, whisk the dry ingredients: whole wheat flour, oat flour, oats, sugar, salt, and baking powder. Toss the dried cherries to coat.
Add the cold, cubed butter and smash between your fingers, incorporating it into the dry ingredients.
In a separate bowl, whisk the egg, yogurt, and vanilla, and pour into dry mixture.
Gently mix everything together with your hands until it becomes a dough and place it on a lined baking sheet. Form into a disc, cut into six scones with a sharp knife and brush with heavy cream, sprinkle with sugar and oats. Bake whole in this circle. This will result in tender, delicious scones that aren't dry!
Bake for 20-35 minutes, until golden brown around the edges.