Preheat oven to 350º. Line baking sheets with parchment paper. Set aside.: Warm, familiar oven heat brings out the sweet butter aroma immediately, and you may catch a faint caramel scent as the oven approaches temperature. Preheating ensures the moment dough hits the sheet it begins to set, which helps create edges that are just kissed with golden color while keeping centers soft. A common mistake is skipping preheat, which causes excessive spreading and denser texture. Make sure your oven is fully at 350º before you bake, and use parchment to prevent sticking and to promote even browning.
Whisk together the flour, baking soda, baking powder, and salt. Set aside.: As you whisk the dry mix, you'll notice the flour lighten and the tiny grains of baking soda and baking powder distribute evenly, which matters for consistent lift. The mixture will smell faintly of flour , with a subtle metallic hint from the leaveners that disappears once baked. Mixing these first prevents pockets of rising agent that can create uneven puffs. A common error is dumping leaveners directly into wet batter, which can lead to patchy texture, so always precombine your dry ingredients.
Cream together the butter and sugars, Beat in the pudding mix, then stir in the eggs and vanilla.: When you cream butter and sugars, you are folding air into the fat, creating tiny bubbles that help the cookie rise and soften. The texture should go from grainy to light and pale, and you'll smell a sweet, toasty butter aroma. Adding instant vanilla pudding at this stage hydrates the mix and starts building that tender, custardy crumb. As you add the eggs and vanilla , the mixture becomes glossy and cohesive. Overcreaming can make the dough too airy and prone to collapse, while undermixing the sugars leaves a gritty texture, so aim for a smooth, unified batter.
Blend in the dry ingredients. Stir in the chocolate chips.: Folding the dry mix into the creamed base will start to thicken the dough and you'll feel resistance as gluten forms from the flour . The dough should come together without streaks of dry flour . When you fold in the chocolate chips , you will see dark flecks distributed throughout, promising melty pockets in the baked cookie. The dough should be slightly sticky but scoopable. A common pitfall is overmixing at this stage which tightens the gluten and yields a tougher cookie. Use a spatula and fold gently until just combined.
Chill the dough if it gets too warm.: A cool dough keeps the cookies from spreading into thin discs. When your hands have warmed the dough or the kitchen is warm, the butter can become too soft, so chilling firms it up and preserves shape. The dough, when chilled, will feel denser and colder to the touch, and you may notice the aroma become less pronounced. Avoid an overly long chill that makes scooping difficult; ten to twenty minutes is often enough. The common mistake is baking immediately from overly soft dough, resulting in flat cookies.
Use a medium cookie scoop to dish out 1 1/2 tablespoon mounds of dough onto your baking sheets.: Scooping consistent mounds leads to even baking and uniform cookies. You will hear a soft thump as the dough hits the parchment, and the mounds should hold shape without flattening. Spacing is important so the cookies do not merge; leave room for gentle spreading. If you overpack the scoop or press the dough smooth, the cookie may spread differently, so release the dough gently. A trick is to rotate the scoop to free the mound cleanly onto the sheet.
Bake for 12-14 minutes or until barely golden brown.: As the cookies bake, they will puff slightly and the edges will take on a light golden hue while centers remain pale. You should smell warm butter and chocolate as they finish. The surface may show small cracks and the chips will be glossy melted spots. Pulling them at the right moment, when edges are set but centers still look slightly underdone, ensures a soft interior once cooled. A common mistake is overbaking, which yields dry, crisp cookies, so aim to remove them when the centers still jiggle a touch and finish setting on the hot sheet.