Place all ingredients in a blender and blend for 1-2 minutes until smooth. If you prefer a seedless froyo, go ahead and strain the seeds out here, using a fine mesh sieve.
2 cups Greek yogurt, 1 cup raspberries, 1/4 cup sweetener, 1 teaspoon vanilla bean paste
Transfer the frozen yogurt base evenly into two Ninja Creami pints. Place in the freezer and freeze for 24 hours.
Place the pint in the Ninja Creami and spin on Lite Ice Cream. The mixture will look a little powdery at this point, which is normal! Proceed to do 1-2 Respin cycles, until the raspberry frozen yogurt is smooth and creamy.
Serve immediately, adding any desired toppings, and enjoy!