Grease a 9x13 inch pan (or 1/4 sheet pan) with butter or coconut oil. Sometimes I’ll line with parchment paper, which makes it easier to remove for cutting.
In a large bowl, stir oats and cereal together. Set aside.
In a medium pot, melt butter, honey, peanut butter, sugar and salt together over medium-high heat. Let it start to bubble. Reduce heat a bit, cook and stir for 2 minutes at a gentle boil. Add vanilla.
Pour over cereal mixture and stir/fold with a rubber spatula until well combined.
Working quickly so you do not lose all the heat, press mixture into prepared pan evenly. A little coconut oil or butter on your hands helps prevent sticking. Sprinkle chocolate chips across the top.
Let sit for five minutes, the warmth of the bars will melt the chips just enough so they stick. Cool in the refrigerator for one hour. Cut into squares or rectangles.
Store at room temperature, or the refrigerator or freezer in warmer climates.