Drizzle melted butter and vanilla over flour/sugar mixture. Stir together with a fork until crumbs form. Set aside.
Prepare Strawberries
Hull, wash and dry strawberries. Chop into ⅛" slices
For the Cake Batter
Preheat oven to 350° F. Lightly spray tube cake pan with baking spray.
Combine dry ingredients (flour, salt and baking powder) in a bowl. Sift if necessary to remove any lumps in flour. Set aside.
Place granulated sugar, vegetable oil and eggs in a separate bowl. Whisk until smooth.
Add one-half of the dry ingredients to the oil/sugar/egg mixture and stir until smooth.
Add the remaining dry ingredients to the bowl and stir until smooth.
Pour cake batter into prepared pan. Place sliced strawberries on top of cake batter.
Sprinkle crumble topping over strawberries.
Bake for 60 - 65 minutes or until toothpick inserted in the center of the cake comes out clean (you may check for doneness by inserting an instant read thermometer into middle of cake. The cake is finished when internal temperature reaches 180℉)
Remove cake from oven and place on a cooling rack for 1 hour. Push up on bottom of tube pan, remove cake and place on a serving dish.