Preheat your oven to 350°F (175°C). Grease and flour the cake pans, or line them with parchment paper for easy removal.
In a large mixing bowl, combine the flour, sugar, cocoa powder, baking powder, baking soda, and salt. Mix well using a whisk or electric mixer.
Add the eggs, milk, vegetable oil, and vanilla extract to the dry ingredients. Beat on medium speed for about 2 minutes until well combined.
Carefully stir in the boiling water; the batter will be thin. Mix until smooth.
Gently fold in the fresh raspberries, being careful not to crush them too much.
Divide the batter evenly between the prepared cake pans.
Bake for 30 minutes or until a toothpick inserted into the center comes out clean. Allow the cakes to cool in the pans for 10 minutes, then transfer to a cooling rack to cool completely.
Once the cakes are completely cool, spread a layer of chocolate frosting on top of one cake layer. Place the second layer on top and frost the top and sides of the cake.
Garnish with additional fresh raspberries on top of the frosted cake.