Follow these simple steps to make your Strawberry Cheesecake:

1. Prepare the Crust: Preheat your oven to 325°F (163°C). In a bowl, combine the graham cracker crumbs, melted butter, and sugar. Mix until well combined, then press the mixture into the bottom of a 9-inch springform pan. Bake for 10 minutes and then set aside to cool.

2. Make the Cheesecake Filling: In a large mixing bowl, beat the softened cream cheese until smooth. Gradually add the sugar and continue to beat until creamy. Add vanilla extract, and mix thoroughly.

3. Add the Eggs: Incorporate eggs one at a time, mixing well after each addition. Then, add the sour cream and flour. Mix until just combined without overbeating.

4. Pour the Filling: Carefully pour the cheesecake filling over the cooled crust. Smooth the top using a spatula.

5. Bake: Place the cheesecake in the preheated oven and bake for about 60 minutes or until the center is set but slightly jiggly. Turn off the oven and let the cheesecake cool in the oven for an hour with the door slightly ajar.

6. Chill: Once cooled, refrigerate the cheesecake for at least 4 hours or overnight for the best texture.

7. Prepare the Strawberry Topping: In a saucepan, combine the sliced strawberries, sugar, and lemon juice. Cook over medium heat until the sugar dissolves and the strawberries soften, about 5-7 minutes. If you desire a thicker topping, mix the cornstarch with a bit of water and stir it in. Cook until thickened.

8. Serve: Once the cheesecake is completely chilled, spread the strawberry topping evenly over the surface.