The Best Cheesecake Ever!

2 packages (8 oz each) cream cheese
1/2 cup sugar (I used honey granules)
1 tablespoon vanilla extract
2 eggs
1 extra serving-size packaged crumb crust (9 oz) **I made my own graham cracker crust.
1 cup chocolate chips (the darker the better)
1/4 cup milk

1. Heat oven to 350 degrees.
2. Beat cream cheese, sugar, and vanilla in mixer bowl until well blended. Add eggs; mix thoroughly. Spread 2 cups batter into crust. Place chocolate chips in medium microwave-safe bowl. Microwave on Medium (50%) 1 minute; stir. If necessary, microwave an additional 15 seconds at a times, stirring after each heating, until chocolate is melted and smooth when stirred. Cool slightly. Add chocolate and milk to remaining batter; blend thoroughly. Drop chocolate batter by tablespoonfuls onto vanilla batter. Gently swirl with knife for marbled effect.
3. Bake 30-35 minutes or until center is almost set. Cool; refrigerate several hours or overnight.