Preheat oven to 400F and line a muffin tin with cupcake liners.
In the large mixing bowl of your stand mixer fitted with the paddle attachment, beat 2 eggs with 1/3 cup raw sugar on medium speed for about 3 min until it's golden in color.
2 large eggs, ⅓ cup raw sugar
Add Greek yogurt, vegetable oil, and vanilla and mix on low speed until combined.
⅔ cup greek yogurt, ¼ cup vegetable oil, 1 tsp vanilla extract
In a separate bowl mix together dry ingredients (flour, oats, baking powder, baking soda, salt, cinnamon and ginger). Add the dry ingredients to the wet a little at a time, mixing on low speed until just incorporated. Do NOT overmix.
11/2 cups whole wheat flour, ⅔ cup rolled oats, 1 tsp baking powder, ½ tsp baking soda, ½ tsp salt, ½ tsp cinnamon, 1 tsp powdered ginger
Lastly, fold the frozen berries in with a spatula. Gently mix until combined. The more these get stirred around, the more they will break up and spread color all over the batter.
½ cup blackberries, ½ cup strawberries, ½ cup raspberries
Using an icecream/cookie scoop, scoop the batter into the prepared muffin tins filling about 3/4 of the way up until all the batter is used. Optionally, sprinkle tops of muffins with oats and brown sugar. Bake in the middle rack at 400˚F for 19-22 minutes until tops start to turn golden brown and a toothpick inserted into the center come out clean. Let cool for 5 minutes in ti, then transfer muffins to a wire rack to cool.