Step 1: Slice the Chicken into Thin Cutlets - Start by placing the chicken breasts on a cutting board and slicing each one horizontally through the middle. You should end up with about 4 to 6 thinner pieces, depending on the size of your chicken breasts. Aim for pieces that are roughly one half inch thick. Keeping them fairly even matters because thin cutlets cook quickly, and similar sizes mean you are less likely to have one piece drying out while another is still finishing. I also like to pat the chicken dry with paper towels at this point. A dry surface gives the cornstarch a better chance to stick and helps the chicken brown instead of steaming.
Step 2: Season and Coat the Chicken - Season the chicken lightly with salt, remembering that the soy sauce will add more salt later. Put the cornstarch on a shallow plate and press each chicken cutlet into it, coating both sides. Shake off the extra cornstarch before moving the chicken to a clean plate. You want a thin, even dusting rather than a thick white layer. That light coating is enough to give you golden edges while leaving behind just enough starch in the skillet to help the sauce become glossy and thick.
Step 3: Brown the Chicken Until Golden - Heat 1 tablespoon of butter in a large skillet over medium high heat. Give the pan a moment to get properly hot before adding the chicken. This is one place where a little patience pays off. If the skillet is not hot enough, the chicken releases moisture and steams rather than browns. Place the cutlets in the skillet without crowding them and cook for about 4 to 5 minutes per side. You are looking for a deep golden color on the outside and chicken that is nearly cooked through. Transfer the browned pieces to a plate while you make the sauce.
Step 4: Mix the Honey Sauce - While the chicken rests, combine the honey, soy sauce, chicken broth, and apple cider vinegar in a small bowl. Stir until the honey loosens and everything is evenly blended. I like mixing the sauce separately because it lets you pour everything into the hot skillet at once. That gives the ingredients a chance to come together evenly instead of having the honey stick to one section of the pan while you scramble to measure the rest.
Step 5: Melt the Butter and Cook the Garlic - Return your attention to the same skillet and add the remaining 3 tablespoons of butter. Once it melts, add the minced garlic and stir constantly for about 30 seconds. You should smell the garlic almost immediately. As soon as it becomes fragrant, you are ready for the next step. Garlic can turn bitter when it burns, and with a hot skillet it can go from fragrant to too dark surprisingly quickly. Keeping this part brief gives you that mellow garlic flavor without any bitterness.
Step 6: Build the Honey Butter Sauce - Pour the honey mixture into the skillet and stir well. Use a wooden spoon or sturdy spatula to scrape along the bottom of the pan as the sauce begins to simmer. Those browned bits left behind from the chicken are packed with flavor, and this is where they get pulled into the sauce instead of being left stuck to the skillet. You will also be incorporating some of the cornstarch that remained after browning the chicken. As the sauce heats, you should notice it becoming a little smoother and slightly thicker.
Step 7: Return the Chicken to the Skillet - Place the browned chicken cutlets back into the skillet, nestling them directly into the honey butter sauce. Spoon some of the sauce over the top of every piece so each cutlet is well coated. At my house, this is usually the moment someone walks into the kitchen asking how much longer dinner will be because the smell of honey, garlic, and butter makes it very hard to ignore what is happening on the stove.
Step 8: Simmer Until the Sauce Thickens - Lower the heat enough to keep the sauce at a gentle simmer. Let the chicken cook for another few minutes, turning the pieces or spooning sauce over them occasionally. As the liquid reduces, the sauce will become thicker and shinier. Keep an eye on it because honey can scorch if the heat gets too aggressive. You want the sauce thick enough to coat the back of a spoon but still loose enough to drizzle over whatever you are serving alongside the chicken. Make sure the chicken reaches a safe internal temperature of 165°F before removing the skillet from the heat.
Step 9: Garnish and Serve - Take the skillet off the heat and scatter chopped chives over the chicken. Add sesame seeds if you are using them. I usually spoon a little extra sauce over each piece just before it reaches the table because nobody at my house has ever complained about extra honey butter sauce. Serve the chicken while it is warm, preferably with something underneath it that can catch every last spoonful from the skillet.