‘Sweet tooth favorite’: Just 5 ingredients. I make this anytime we host.

For picky eaters, you can keep things extra simple by using plain crisp rice cereal as the crunchy topping and skipping any mix-ins that might scare them off—just brownies, caramel, cereal, and chocolate chips. If your crew loves nuts, stir 1/2–1 cup of chopped pecans or walnuts into the crunchy topping for a more grown-up flavor and extra texture. For a salty-sweet twist, use crushed pretzels as the crunch layer and sprinkle a tiny pinch of flaky sea salt over the top right when the pans come out of the oven. If you need to save a little time, you can swap the caramels and cream for a thick store-bought caramel sauce—just drizzle it generously over the batter before adding the crunch topping. To make these feel a bit lighter for summer, bake them slightly under so they stay fudgy, then chill and serve small squares with a big scoop of vanilla frozen yogurt and fresh berries. These trays also freeze well: cool completely, cover tightly with foil and plastic wrap, and freeze for up to a month; just thaw in the fridge overnight before serving.