I always bring a few snacks to an annual Oscars party we attend, and for last Sunday’s party, I wanted to sort of work with a theme. I was certain it was going to be an Avatar-dominated Oscars so I was thinking ‘blue.’ I couldn’t have been more wrong, and obviously, I didn’t do so well with my Oscars betting this year, but at least this blueberry crumble tart was tasty. The recipe is from The Modern Baker, where it’s called a blueberry crumble pie. I wanted the cut pieces to be a simple, square form that would be easy to pick up at the party, so I baked it in a rectangular tart pan. I was also a little worried about how runny and gooey the filling would be, and to make it firmer and easier to handle, I used a little extra cornstarch. That part of my plan came together well. The pieces were easy to cut and easy to pick up without the filling running all over the place. At least that prediction worked out for me.
The tart crust was made from the sweet tart dough recipe in the same book. That dough includes an egg, an egg yolk, and baking powder in addition to the butter, flour, and sugar. It was mixed in a food processor and then wrapped in plastic and left to rest in the refrigerator for 20 minutes or so. It was more dough than I needed for my rectangular tart pan, so I also made a small, free-form rustic tart to leave at home. The filling was made with frozen blueberries, sugar, a tablespoon more of cornstarch than the four tablespoon suggested, and nutmeg. After cooking and thickening, cold butter was stirred into the blueberry filling mixture. The ample crumb topping was made by combining flour, baking powder, cinnamon, brown sugar, and melted butter. Once folded together, it was left to sit while prepping the tart shell and filling. Often it’s tempting to double the quantity of a crumb topping, but I can tell you this recipe made plenty and doubling it would have been way too much. Once the filling was spooned into the shell and the crumble topping was sprinkled on top, the assembled tart baked for 40 minutes.
The crust was flaky and golden and lovely, and the filling was just firm enough and full of blueberry goodness, but the crumble topping was my favorite part. Those nuggets of buttery, crunchy, fun were a delight on top of the tart. It could have been almost any fruit in the filling because in the end, the blueness of it didn’t matter at all, but I’m glad that concept led me to this tart anyway.