Preheat your oven to 350°F and line an 8x8 inch baking dish with parchment paper or lightly grease it. While the oven preheats, measure out all your ingredients and set them nearby—this ensures smooth assembly once you start mixing. I like to have my eggs at room temperature before starting, as they incorporate more evenly into the batter and create a better texture.

In a medium bowl, whisk together the oats, cocoa powder, and salt until evenly combined. This distributes the cocoa throughout the oats so you get consistent chocolate flavor in every bite, rather than pockets of cocoa-heavy or cocoa-light areas.

In a separate bowl, whisk together the eggs, coconut oil, applesauce, maple syrup, and vanilla extract until well blended and smooth. The applesauce acts as a binder and adds moisture while reducing excess oil, creating a fudgy texture rather than a greasy one. I find that whisking vigorously for about 30 seconds ensures the oil fully incorporates rather than pooling.

Pour the wet ingredient mixture from Step 3 into the bowl with the dry ingredients from Step 2, stirring until just combined—don't overmix, as this can make the oatmeal tough. Fold in the chocolate chips if using, distributing them evenly throughout the batter. The batter will be thick and chunky, which is exactly what you want.

Pour the batter into your prepared baking dish and spread it into an even layer. Bake for 17-20 minutes, until the edges look set and slightly firm but the center still has a little give when you gently press it—this residual heat will continue cooking it as it cools, keeping it fudgy rather than cake-like. The top should look matte and slightly cracked.

Remove from the oven and let cool in the pan for 10-15 minutes before cutting into squares. This resting time allows the oatmeal to set up just enough to slice cleanly. Serve warm or at room temperature with your favorite toppings like chocolate drizzle, whipped cream, or a drizzle of nut butter.