Lift out with parchment and break into pieces (or cut squares). Store airtight with parchment between layers.
Boil Toffee: Melt butter + brown sugar + salt. Bring to a full boil and boil 3 minutes, stirring constantly.
Pour & Spread: Pour hot toffee over crackers. Spread fast and evenly with an offset spatula.
Bake: Bake at 400°F for 5–7 minutes until bubbling all over and golden (watch closely).
Melt Chocolate: Sprinkle chocolate chips over hot toffee. Rest 2–3 minutes, then spread smooth.
Top It: Add toppings immediately while chocolate is wet. Press lightly so they stick.
Chill: Refrigerate 1–2 hours until fully set.
Break: Lift out with parchment and break into pieces (or cut squares). Store airtight with parchment between layers.