01 - Line an 8x8-inch baking pan with parchment paper, leaving an overhang for easy removal.
02 - In a medium bowl, mix granola, honey (or maple syrup), and melted coconut oil until combined.
03 - Press the granola mixture firmly and evenly into the bottom of the prepared pan to form the base.
04 - In a separate bowl, blend Greek yogurt, honey (or agave), and vanilla extract until smooth.
05 - Spread the yogurt mixture evenly over the granola base.
06 - Scatter the mixed berries over the yogurt layer. If desired, sprinkle with chia seeds for extra texture and nutrition.
07 - Place the pan in the freezer and freeze for at least 4 hours, or until completely firm.
08 - Once frozen, use the parchment overhang to lift the slab out of the pan. Place on a cutting board and let sit for 5–10 minutes to soften slightly.
09 - Slice into bars using a sharp knife. Store bars in an airtight container in the freezer; serve frozen or slightly thawed.