Pit and roughly chop one peach into quarters for blending, then dice the second peach into 1/2-inch pieces and set aside. The rough chop for blending doesn't need to be precise since it will be pureed, but keeping the diced peach pieces uniform ensures they'll stay intact and provide pleasant texture throughout the overnight oats.

Combine the quartered peach, milk, maple syrup, vanilla essence, cinnamon, salt, lemon juice, and nutmeg in a blender. Blend for 45-60 seconds until smooth and well combined. The lemon juice brightens the peach flavor and prevents it from tasting one-dimensional—I find this small addition makes a real difference in the final taste. The blending time is crucial: you want a smooth liquid base without over-processing.

In a large bowl, whisk together the oats, chia seeds, and yogurt until evenly distributed. The yogurt acts as a binder and adds creaminess, while the chia seeds will absorb liquid and create that signature pudding-like texture overnight. Make sure there are no clumps of yogurt so everything incorporates evenly when you add the liquid.

Pour the blended peach milk from Step 2 into the bowl with the oat mixture from Step 3, stirring well to combine. Let the mixture sit at room temperature for 5 minutes—this resting period allows the oats and chia seeds to begin absorbing liquid and softening, which helps distribute moisture evenly throughout the mixture before chilling.

Gently fold the diced peaches from Step 1 into the oat mixture. I like to fold rather than stir so the peach pieces stay intact and don't break apart—this keeps you with nice chunks of fresh fruit throughout. Folding also prevents over-mixing, which can make the texture dense.

Divide the mixture evenly into mason jars or airtight containers. Cover and refrigerate for at least 4 hours, but preferably overnight. During this time, the oats and chia seeds continue to absorb the liquid, creating the thick, pudding-like consistency. The flavors also meld and deepen. In the morning, stir to recombine and add a splash of milk if you prefer a thinner consistency, then enjoy cold or heat gently if preferred.