Making Frozen Yogurt Bars is as simple as following these steps:

1. Prepare a Pan: Line an 8×8 inch square baking pan with parchment paper, allowing some overhang for easy removal later.
2. Mix Ingredients: In a large bowl, combine the Greek yogurt, honey, and vanilla extract, stirring until smooth and well-blended.
3. Add Fruit: Gently fold in the mixed berries, making sure they are evenly distributed throughout the yogurt mixture.
4. Layer: Pour the yogurt mixture into the prepared baking pan, spreading it evenly.
5. Sprinkle Toppings: Add granola on top, and if desired, sprinkle in some nuts or chocolate for extra flavor.
6. Freeze: Cover the pan with plastic wrap or a lid and place it in the freezer for 4-6 hours, or until firm.
7. Cut Bars: Once fully frozen, lift the mixture out of the pan using the parchment paper. Place on a cutting board and slice into rectangular bars.
8. Store: Place the bars in an airtight container and store in the freezer for later enjoyment.

Following these steps will lead you to the amazing creation of frozen yogurt bars, ideal for satisfying your sweet cravings.