Preheat your oven to 350°F (175°C).
Grease and flour two 9-inch round cake pans, then line the bottoms with parchment paper.
Prepare the Cake Batter:
In a large mixing bowl, whisk together the flour, baking powder, baking soda, and salt. Set aside.
In another large mixing bowl, use an electric mixer to cream the butter and sugar together until light and fluffy.
Add the vegetable oil and beat until combined.
Add the eggs one at a time, beating well after each addition.
Mix in the vanilla extract and strawberry extract (if using).
Gradually add the dry ingredients to the wet ingredients, alternating with the buttermilk, beginning and ending with the dry ingredients. Mix until just combined.
Gently fold in the strawberry puree.
Bake the Cakes:
Divide the batter evenly between the prepared cake pans.
Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted into the center comes out clean.
Allow the cakes to cool in the pans for 10 minutes, then turn them out onto a cooling rack to cool completely.
Prepare the Strawberry Frosting:
In a large mixing bowl, use an electric mixer to beat the butter until smooth and creamy.
Gradually add the powdered sugar, 1 cup at a time, beating well after each addition.
Add the vanilla extract and salt, and beat until combined.
Gradually add the strawberry puree, beating until the frosting is light and fluffy.
Assemble the Cake:
Place one cake layer on a serving plate.
Spread a generous layer of strawberry frosting on top.
Place the second cake layer on top and frost the top and sides of the cake with the remaining frosting.
Decorate with fresh strawberries, if desired.
Enjoy this Best Ever Strawberry Cake for any special occasion or simply as a delightful treat!