Peanut Butter Cups

1 cup semisweet chocolate chips

¼ cup butter

1 tablespoon vegetable oil

¼ cup peanut butter

Coat a small cup muffin tin with cooking spray. In a microwave-safe bowl, microwave chocolate with butter and oil, stirring often, until melted, 1 to 2 minutes. Pour about a tablespoon of the chocolate mixture into each muffin cup.

Melt peanut butter in microwave, 30 to 40 seconds. Spoon about 1 teaspoon of melted peanut butter over chocolate in each muffin cup. Top with another tablespoon of chocolate.

Chill in refrigerator 30 minutes, until set.