Chocolate-Chip Raspberry Frozen Yogurt (Kopie)

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Ingredients
•3 cups unsweetened frozen raspberries
•2 cups fat-free plain yogurt
•1/3 cup granulated sugar (or to taste)
•½ Tbsp vanilla extract
•½ cup mini chocolate chips

Instructions
Process raspberries, yogurt, sugar, and vanilla until smooth in food processor. Pour into ice cream maker and prepare according to manufacturer's instructions, adding chocolate chips in the last 5 minutes of freezing OR see tips under "No Ice Cream Maker?"

Variations
•For chocolate-chip strawberry frozen yogurt, substitute unsweetened frozen strawberries.
•For chocolate-chip banana frozen yogurt, slice and freeze 2-4 bananas, depending on size, and substitute 3 cups frozen banana slices for raspberries.