Follow these easy steps to create a mouthwatering Patriotic Strawberry Shortcake:

1. Preheat Oven: Preheat your oven to 350°F (175°C). Grease and flour two round 9-inch cake pans.
2. Mix Dry Ingredients: In a large bowl, whisk together flour, baking powder, baking soda, and salt.
3. Combine Wet Ingredients: In another bowl, mix melted butter, granulated sugar, milk, and vanilla extract until well-blended.
4. Mix Batter: Gradually combine wet ingredients into the dry ingredients. Stir until just combined (do not overmix).
5. Divide Batter: Pour the batter evenly into the prepared cake pans.
6. Bake: Place in the oven and bake for 25-30 minutes or until a toothpick inserted in the center comes out clean.
7. Cool the Cakes: Remove from the oven and allow the cakes to cool in their pans for 10 minutes. Then, transfer them to wire racks to cool completely.
8. Prepare Strawberries: While the cakes are cooling, hull and slice the strawberries. Set aside a few slices for decoration.
9. Make Whipped Cream: In a mixing bowl, add heavy whipping cream and powdered sugar. Whip on high speed until soft peaks form.
10. Assemble the Cake: Once cakes are completely cool, place one layer on a serving platter. Spread a layer of whipped cream over the top, followed by sliced strawberries.
11. Add Second Layer: Place the second cake layer on top. Top with more whipped cream and arrange remaining strawberries and blueberries for decoration.
12. Garnish: For an extra touch, drizzle with some additional whipped cream and add fresh mint leaves if desired.

Your stunning Patriotic Strawberry Shortcake is now ready to be enjoyed!