Crafting a slice of Heaven On Earth Cake requires careful attention to detail and a few easy steps to follow:

1. Preheat Oven: Preheat your oven to 350°F (175°C) and grease a 9×13 inch baking pan.
2. Prepare Dry Ingredients: In a large mixing bowl, sift together all-purpose flour, baking powder, and salt.
3. Cream Butter and Sugar: In another bowl, beat the softened butter and granulated sugar until light and fluffy.
4. Add Eggs: Add the eggs, one at a time, to the butter and sugar mixture, beating well after each addition.
5. Incorporate Milk and Vanilla: Mix in the milk and vanilla extract until smooth.
6. Combine Mixtures: Gradually add the dry mixture to the wet ingredients and mix until fully combined.
7. Bake: Pour the batter into the prepared pan and bake for 25-30 minutes or until a toothpick inserted in the center comes out clean.
8. Cool the Cake: Remove from the oven and allow it to cool in the pan for 10 minutes. Then transfer it to a wire rack to cool completely.
9. Prepare the Cream: While the cake is cooling, whip the heavy cream with powdered sugar until soft peaks form.
10. Layer the Cake: Once the cake has completely cooled, slice it horizontally into two layers.
11. Assemble: On a serving platter, place the bottom layer of the cake. Spread a generous layer of whipped cream over it and top with mixed berries. Place the second layer of the cake on top.
12. Frost the Top: Apply a layer of whipped cream on top of the second layer and decorate with additional berries and fresh mint for presentation.