Preheat oven to 375F
Line cookie sheets with aluminum foil, then parchment paper on top of the foil
Line the bottom of the cookie sheet with one layer of matzah, breaking pieces to fill the sheet as needed
In a saucepan, combine the butter and brown sugar. Cook over medium heat, stirring constantly, until the mixture comes to a boil
Boil for 3 minutes, stirring constantly
Pour mixture over the matzah, covering completely (spread with spatula if necessary)
Place baking sheet in oven and immediately lower the temperature to 350F
Bake for 15 minutes, checking constantly to make sure it's not burning. If it seems like it's browning too quickly, remove the tray, set the oven to 325F, and replace the tray
Remove from oven and immediately sprinkle with chocolate chips
Wait 5 minutes, then using a spatula, spread the chocolate evenly over the matzah. Sprinkle with other toppings, if using
While still warm, break into pieces
Chill, still in the pan, then in refrigerator or freezer until set