Preheat the oven to 350 degrees F. Line a baking sheet with a silpat or parchment paper.: Warmth fills the kitchen as the oven comes up to temperature, and you should notice a gentle dry heat once it stabilizes, which primes the pan for even baking. This step ensures the cookies begin baking immediately on a consistently hot surface, promoting uniform spread and browning. A common mistake is skipping the parchment or silpat, which can cause sticking and uneven bottoms. If your oven runs hot, check the dial with an oven thermometer to avoid overly dark edges.
In a large mixing bowl or bowl of a stand mixer, add the oatmeal, flour, hazelnut flour, brown sugar, baking soda, salt, cinnamon, melted coconut oil (pumpkin if using), applesauce, eggs and vanilla. Beat until the dough is moist and all the ingredients are combined. Fold in the chocolate chunks + coconut flakes.: At this stage you will smell coconut and warm spice as everything comes together, and the dough should feel slightly tacky but cohesive, not dry. Combining dry and wet components this way helps hydrate the oats and evenly distribute leavening agents, which is why I always beat until homogenous then finish with a gentle fold for the chocolate. Avoid over mixing, as that can make the cookies dense. If the dough seems too wet, let it rest for a few minutes so the oats can absorb extra moisture.
Using your hands clump together 1 1/2 tablespoons of dough. Place on the prepared baking sheet and squash down into a 1/2 inch thick circle. Repeat with remaining dough.: You will feel the dough's texture with your fingertips, sticky and pliable. Shaping by hand creates irregular, bakery style tops that brown attractively. Pressing to a 1/2 inch thickness ensures even baking through the center while keeping the edges slightly crisp. A frequent misstep is rolling into balls and leaving them tall, which can cause overly domed centers; take care to flatten gently and evenly.
Bake for 10 -12 minutes or until set. DO NOT OVER BAKE, if anything under bake. Let cool slightly on a cooling rack.: The oven will sing with warm oat and chocolate aromas as the cookies bake, and visual cues matter here, look for edges that are lightly golden and centers that are set but still soft. Baking slightly less rather than more helps retain chewiness, because cookies continue to firm as they cool. A common error is waiting for deep browning, which risks drying them out; remove them when they look just set and allow carryover cooking on the rack.
Meanwhile, heat a skillet over medium heat and add the butter. Once melted, add the pepitas and hazelnuts + maple. Cook until lightly toasted and caramelized.: The kitchen will fill with a toasty, nutty aroma as the seeds toast and syrup begins to caramelize, and you should hear a gentle sizzling as moisture evaporates. Toasting concentrates the pepitas' flavor and the maple promotes a shiny glaze, giving them a candy like surface that contrasts with the soft cookie. Stir continuously to avoid scorching; burned seeds taste bitter and will ruin the mix.
Dip each cookie into the melted chocolate and place on a parchment lined cookie sheet. Sprinkle the seeds onto the cookies and then sprinkle with salt + crushed instant coffee powder. Allow the chocolate to set up... dig in!: The final assembly is sensory rich, with glossy chocolate coating and the crackle of chilled chocolate as it firms. The toasted pepitas adhere to the chocolate and add crunch, while the coffee and salt lift the chocolate flavor in the most surprising way. Work quickly so the melted chocolate is fluid enough to coat, and if it begins to thicken, briefly rewarm it in short bursts to avoid graininess. Letting them set at room temperature on parchment prevents condensation that can make the chocolate bloom.
Cookies can be stored in an airtight container for up to 4 days.: Over time the textures harmonize and the flavors meld, and you will often notice the cookies taste even better the next day. Storing them in a single layer or with parchment between layers helps preserve the chocolate finish and prevents sticking. Avoid refrigerating, as that can make the chocolate bloom and the crumb firmer than intended.
