Beat softened butter and sugar in a stand mixer until light and fluffy. Gradually add eggs. Mix in vanilla, salt and flour. Spread 1/2 of batter in a greased 13 x 13 x 9 pan. Spread 1/2 of the strawberry topping over the batter. Layer with the remaining batter. Bake in a 350 degree oven for 1/2 hour. Pour cheesecake batter over the top of partially baked shortcake/strawberry batter. Bake until toothpick inserted in center comes out almost clean (will be just slightly wet, length varies in a home oven vs. commercial oven)- approximately 30- 45 minutes more-don't overbake.
Remove from oven and let cool. Spread whipped cream over the top of the bars and cover with an even layer of sliced fresh strawberries. Cut into 12 bars.