In a small bowl, whisk together the 1 tablespoon of cream and egg.
Using a pastry brush (or whatever you have on hand), brush the cream and egg mixture on top of the 4 dough discs. Then sprinkle, with a heavy hand (which is usually my advice for all sugar- or alcohol-based concoctions), the sugar on top of the dough discs.
Pop the discs, uncovered, into the freezer. Set the timer for a minimum of 30 minutes. I recommend something closer to 1 hour. At that point, either bake the raspberry + blueberry scones or wrap them tightly (as noted above) and freeze until you are ready to eat them.
Pre-heat your oven to 400 degrees F.
Pull the raspberry + blueberry scones out of the freezer. Using a sharp knife (I love my bread knife for this), cut each disc into 4, equal-size scones (yielding 16 cute, petite scones total). When cutting, make sure to press down quickly and lift straight up. If you wiggle the knife in there or use a sawing action, your sides won’t have a nice, defined edge.
Pull the scones at least two inches away from each other…they need room to expand. You can gently loosen the bottoms with a spatula if they’re sticking a bit. Some recipes tell you to keep the scones pretty close together while baking as it will help them rise up. However, if they’re too close, the scones will grow back together and be kinda mushy on the sides. Error on the side of space.
Set the timer for 13 minutes. Start watching them around the 13 minute mark to see how they’re doing. Make sure the area around the fruit is cooked through (especially if they were frozen solid). Don’t go over on the time looking for a bronze tinge. As soon as you see a light tan around the edges, pull them out. They should look firm on the tops and not dough-like, but not even close to George Hamilton dark.
Set the raspberry + blueberry scones on a cooling rack. After about 5ish minutes, you should be able to take them off of the baking sheet and let them finish cooling on the rack.