Start your journey by preheating your oven to 350°F (175°C). This ensures a perfect bake right from the get-go.

Take an 8x8-inch (or 9x9-inch) baking dish. Line it with parchment paper, allowing some overhang on the sides. This will make it easy to lift out the bars later. And trust me, you want them to come out smoothly.

In a mixing bowl, combine the all-purpose flour, graham cracker crumbs, baking powder, sea salt, and cinnamon (if using). Mix everything well. Then, in another bowl, blend the softened butter and brown sugar together until creamy. Add the vanilla extract and egg, mixing until well combined. Now, gradually stir in the flour mixture until you have a thick, consistent batter.

Spoon the batter into your prepared baking dish. Press it down evenly with your fingers or the back of a spatula. Aim for an even thickness across the base.

Next, sprinkle the butterscotch chips evenly over the crust. If you’re adding nuts or chocolate chips, now’s the time to do so. Finally, top it off with shredded coconut. Don't be shy—add as much as you like!

Place the dish in your preheated oven and bake for about 25-30 minutes. Keep an eye on it; once the edges are golden brown, you’re good to go. The center might still look a little soft, but it will firm up as it cools.

Once baked, remove the dish from the oven and let it cool completely on a wire rack. Don't rush this part! Cooling helps the bars set properly and makes cutting much easier.

After your magic bars have cooled, use the parchment paper to lift them out of the dish. Slice into squares or rectangles, and serve these delightful treats at your next gathering.