Cheesecake Brownies

recipe courtesy of smittenkitchen

Brownie batter
2 sticks sliced unsalted butter
6 ounces unsweetened chocolate, chopped (or, if using semisweet, do only 1.5c sugar)
2 cups sugar
4 large eggs
1 teaspoon pure vanilla extract
1 1/2 cup all-purpose flour

Pinch salt

Cheesecake batter 
16 ounces (2 packages) cream cheese, well softened
2/3 cup sugar
2 large egg yolks
1/2 teaspoon pure vanilla extract

Plus
1/2 bag of semisweet chocolate chips

Make brownie batter: 

- Grease 9x13 pan, preheat oven to 350

- Melt butter and chocolate gently (i.e. in double boiler or microwave) - whisk til smooth

- add in sugar, eggs, vanilla, salt, and lastly flour

- spread into pan

Make cheesecake batter: 

- whisk together all ingredients

- dollop onto brownie batter in pan, use butter knife to spread and swirl

- sprinkle chocolate chips on top

Bake brownies: 

- Bake until edges are slightly puffed and center is just set, about 45 minutes.