Preheat your waffle iron. Set it to medium heat. Lightly grease it with oil or nonstick spray so the waffles release cleanly.
Whisk the wet ingredients. In a bowl, whisk eggs, maple syrup, vanilla, and almond butter until smooth and glossy.
If your nut butter is stiff, warm it slightly so it blends easily.
Add the dry ingredients. Sprinkle in cocoa powder, baking soda, and salt. Stir until just combined. If the batter looks very thick (like brownie batter that won’t pour), add 1 tablespoon of milk.
You want it thick but spoonable.
Fold in chocolate chips. This is optional, but it boosts the fudgy texture. Don’t overmix.
Cook the waffles. Spoon enough batter to cover about 2/3 of the waffle grid. Close the lid and cook for 3–4 minutes, or until the edges are set and the center feels firm but springy.
These waffles are delicate when hot.
Let them set. Use a silicone spatula to ease the waffle out gently. Cool on a wire rack for 1–2 minutes so the exterior crisps up.
Finish and serve. Top with berries and a spoonful of yogurt for a lighter take, or go classic with melted dark chocolate and a sprinkle of sea salt.