This surprisingly easy strawberry cheesecake is a variation off of the New York-Style Cheesecake recipe found in The Cake Mix Doctor. I used fresh strawberries that were starting to dry out just a little bit, which probably reduces the amount of moisture in the finished cake. I wouldn't recommend using frozen berries as they just produce too much water.
Easy Strawberry Cheesecake
1 pkg. yellow cake mix
4 Tbsp butter, melted (1/2 a stick)
2 pkg. cream cheese (total of 16 oz.), at room temperature
1 can (14 oz.) sweetened condensed milk
1/2 cup vanilla Greek yogurt
2 1/2 Tbsp. lemon juice
1 Tbsp. vanilla extract
1 1/4 cups fresh strawberries, sliced
1) Heat oven to 325° Lightly grease a pan. I used two 9" round springform pans, but you could also use a 13 x 9 inch baking dish.
2) Set aside 1/2 cup of the cake mix for the filling. Place the rest of the mix (most of the box), melted butter, and 1 egg in a mixing bowl to make the crust. Mix until the batter makes a ball, then transfer it to your pan and spread evenly on the bottom and up the sides.
3) For the filling, mix the cream cheese and sweetened condensed milk in a mixing bowl. (The beauty of this recipe is that you don't need to clean the bowl and beaters you used to make the crust.) Blend until just combined, then add the 1/2 cup of reserved cake mix, remaining 3 eggs, Greek yogurt, lemon juice, and vanilla extract. Beat for a minute.
4) Stir in the fresh strawberries, then pour into the crust. Spread the filling around so that it's an even layer inside the crust.
5) Bake at 325° until the center doesn't jiggle when pan is shaken and top is kind of shiny. This will take at least 40 minutes. When it's done, transfer it into the fridge and let it cool there for at least an hour. Anything made with cream cheese seems to taste better the next day, and this is especially true for cheesecake. I try to let mine sit in the fridge a full day (or at least overnight) before serving.