Lightly spray an 8 x 8 pan with oil. Lining it with parchment paper also works well.
In a medium saucepan, mix together chocolate chips, peanut butter chips and sweetened condensed milk. Heat at medium temperature until chips have melted and mixture is smooth.
Remove from heat and add the vanilla.
Spread in the prepared pan.
While still warm, add dollops of the peanut butter, and swirl with a knife to create the marble effect.
Chill for at least 3 hours or until firm before cutting.

Kitchen-Friendly View

Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	1846.66 Kcal (7732 kJ)
Calories from fat	920.77 Kcal
		% Daily Value*
Total Fat	102.31g	157%
Cholesterol	13.23mg	4%
Sodium	990.58mg	41%
Potassium	1475.96mg	31%
Total Carbs	231.78g	77%
Sugars	1.97g	8%
Dietary Fiber	13.99g	56%
Protein	34.72g	69%
Iron	7.8mg	43%
Calcium	356.8mg	36%

Amount Per 100 g
Calories	466.63 Kcal (1954 kJ)
Calories from fat	232.67 Kcal
		% Daily Value*
Total Fat	25.85g	157%
Cholesterol	3.34mg	4%
Sodium	250.31mg	41%
Potassium	372.96mg	31%
Total Carbs	58.57g	77%
Sugars	0.5g	8%
Dietary Fiber	3.54g	56%
Protein	8.77g	69%
Iron	2mg	43%
Calcium	90.2mg	36%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.