Prep the yogurt: In a bowl, stir the yogurt with vanilla, a pinch of cinnamon, and sweetener if using. Taste and adjust. A tiny pinch of salt can make flavors pop.
Mix the seed base: In a small cup, combine chia seeds and ground flaxseed.
If you like a thicker, pudding-like texture, stir them into the yogurt now and let it sit 5–10 minutes.
Toast the nuts and seeds (optional but recommended): In a dry skillet over medium heat, toast pumpkin seeds and chopped nuts for 2–3 minutes until fragrant. Let cool briefly for extra crunch.
Layer the parfait: Add half the yogurt to a glass or bowl. Sprinkle on half the chia/flax mix, half the nuts and seeds, and a few berries if using.
Repeat with remaining ingredients.
Top it off: Finish with shredded coconut, another pinch of spice, and a few more seeds for texture.
Serve right away: Enjoy immediately for maximum crunch, or chill for 10 minutes if you prefer the chia to thicken the yogurt.