Creating a Strawberry Sheet Cake is streamlined with these easy steps:

1. Preheat the Oven: Begin by preheating your oven to 350°F (175°C). Grease and flour a 9×13 inch baking dish.
2. Mix Dry Ingredients: In a medium bowl, whisk together the flour, baking powder, and salt until well blended.
3. Cream Butter and Sugar: In a large mixing bowl, cream the softened butter and granulated sugar until light and fluffy.
4. Add Eggs and Vanilla: Incorporate the eggs one at a time, mixing thoroughly after each addition. Stir in the vanilla extract.
5. Combine Mixtures: Gradually add the dry ingredients to the butter mixture, alternating with the whole milk. Mix until just combined.
6. Fold in Strawberries: Gently fold in the diced strawberries, ensuring they are evenly distributed throughout the batter.
7. Pour Batter into Dish: Pour the batter into the prepared baking dish, spreading it evenly.
8. Bake: Place in the oven and bake for 25-30 minutes or until a toothpick inserted into the center comes out clean.
9. Cool the Cake: Remove the cake from the oven and allow it to cool in the baking dish for about 30 minutes before transferring it to a wire rack to cool completely.
10. Prepare Frosting: In a mixing bowl, combine the softened butter and powdered sugar, adding milk gradually until smooth and spreadable.
11. Frost the Cake: Once the cake is completely cool, spread the frosting evenly over the top using a spatula.

Following these steps will guide you through the process of making a delightful Strawberry Sheet Cake with ease!