• Pre-heat the oven to 350℉/176℃ and line a 9x9 baking pan with parchment paper. Set aside.

For the streusel

• In a medium-sized bowl, add softened butter, flour, cinnamon, white sugar, and brown sugar. With your hands or a fork, mix together until combined. Set in the fridge to chill as the cake batter is made.
  1 cup all-purpose flour, 1/2 cup white sugar, 2 tbsp light brown sugar, 6 tbsp unsalted butter, 1/8 tsp cinnamon

For the cake

• Prep: Melt the butter and allow it to cool. Slice the strawberries into small pieces and set aside to use later. Lastly, zest the orange to use later.
  1/3 cup unsalted butter, 2 1/2 cups fresh strawberries, Zest of 1 orange
• In a medium-sized bowl, add in the dry ingredients. Stir together and set aside.
  2 cups all-purpose flour, 3/4 tsps baking soda, 1 tsp baking powder, 1 tbsp cornstarch, 1/4 tsp salt
• In a large-sized bowl, add in white sugar and eggs. Whisk together for 2-3 minutes until well combined.
  2/3 cups white sugar, 2 large eggs
• Add the orange zest in and continue whisking.
  Zest of 1 orange
• Add the butter and oil in and keep on whisking.
  1/3 cups oil, 1/3 cup unsalted butter
• Add the yogurt and vanilla in and mix until well combined.
  1 tbsp vanilla, 3/4 cups yogurt
• With a spatula, mix the dry and wet ingredients together until a soft cake batter forms. Do not over-mix!
• Transfer the batter into the prepared pan.
• In the bowl with the sliced strawberries, add 1 tbsp of flour. Mix around until evenly coated. This will prevent the berries from sinking as they bake.
• Sprinkle the strawberries evenly on top of the cake, then sprinkle the streusel.
• Bake the cake for 40-55 minutes or until a toothpick inserted comes out clean.
• Allow the cake to cool, slice, and enjoy!