Frosting
In the bowl of a stand mixer, beat the butter until light and creamy, about 2–3 minutes.
Add 1 cup powdered sugar and mix until combined.
Add the milk and remaining powdered sugar and beat on medium speed for 2–3 minutes until light and fluffy
Filling
Add strawberries, sugar, and orange juice to a small sauce pan and bring to a boil, reduce heat and simmer for 10 minutes on low, stirring regularly so it doesn't stick to the bottom,
Cake
Preheat oven to 350°F. Grease and line two 8-inch cake pans with parchment paper.
In a medium bowl, whisk together the flour, baking powder, and salt.
In a large bowl, whisk together the sugar, melted butter, milk, vanilla, egg, and Greek yogurt until smooth.
Add the dry ingredients to the wet ingredients and mix just until combined. Do not overmix.
Divide the batter evenly between the prepared cake pans.
Bake for 28–33 minutes, or until a toothpick inserted in the center comes out clean.
Cool in the pans for 10 minutes, then transfer to a wire rack to cool completely.
Assemble the Cake
Place one cake layer on a serving plate.
Spread the strawberry filling evenly across the top of the cake
Place the second cake layer on top.
Frost the top and sides of the cake