Preheat the oven to 350 F (175C) and line an 8"x8" pan with parchment paper.
In a saucepan over medium heat, melt together everything except for the oats and chocolate.
1/2 cup + 1 tbsp (126 grams) unsalted butter, 2/3 cup (133 grams) light brown sugar, 1/4 cup (80 grams) honey, 1 teaspoon vanilla extract, 1/4 teaspoon salt
Once it's totally melted, remove from the heat and stir in the oats until combined.
3 1/3 cups (300 grams) quick oats
Scoop into the pan, firmly pat it down with a spoon or silicone spatula, and bake for 13-15 minutes.
The edges will have browned just a little and it'll be bubbling mostly around the edges, and maybe also a little in the center. Don't let it bubble too long or it "fries" the bars and makes them too hard to chew. When you take them out of the oven and tilt the pan to the side, they should be firm enough so that they don't move. They firm up as they cool.
Remove from the oven and let cool for 10 minutes.
In a small saucepan over medium-low heat, melt the chocolate and butter together. Spread over the bars.
1 1/4 cups (213 grams) semi-sweet chocolate
Let cool completely, about 2 hours, or put into the fridge or freezer to speed it up.
Cut into bars. Store in an airtight container at room temp for 1 week, refrigerate for 2 weeks or freeze for 3 months.