Creating this amazing Strawberry Sheet Cake is simple. Follow these steps for a perfect outcome:

1. Preheat the Oven: Preheat your oven to 350°F (175°C) and grease a 9×13 inch baking pan.
2. Mix Dry Ingredients: In a large bowl, whisk together the 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, mixing well after each addition. Stir in the vanilla extract.
5. Combine Wet Ingredients: Gradually add the milk and pureed strawberries to the butter mixture, mixing until combined.
6. Combine Mixtures: Slowly add the dry ingredients to the wet mixture, stirring until just combined. Be careful not to over-mix.
7. Pour Batter: Pour the batter into the prepared baking pan, smoothing the top with a spatula.
8. Bake: Bake in the preheated oven for 30-35 minutes or until a toothpick inserted into the center comes out clean.
9. Cool the Cake: Remove the cake from the oven and let it cool in the pan for 10 minutes. Then transfer it to a wire rack to cool completely.
10. Prepare the Frosting: In a bowl, beat the softened butter until creamy. Gradually add the powdered sugar and milk, mixing until smooth and fluffy.
11. Frost the Cake: Once the cake is completely cool, spread the frosting evenly over the top.
12. Garnish: Decorate with fresh strawberry slices for a beautiful finish.

Following these steps will guide you in creating a delightful Strawberry Sheet Cake that’s sure to impress!