I had some big plans for this past weekend. It was in the 70’s in Seattle and everyone was out on the lake, gardening, running, biking, and lounging on patios. Our house, on the other hand, came down with the plague. Sam’s been struggling with his allergies all week and I caught a rogue flu, so instead of beach picnics and planting herbs, I finally finished An Everlasting Meal, drank honeyed licorice tea, and took many naps. We did, also, drag ourselves to the U-District farmers market and picked up some rhubarb, sorrel, broccolini, and farm eggs. The fridge had become quite bare and it felt really good to have some color around.
Now I’m not sure if we’ve chatted about this before, but I’m not the best sick person. I don’t do well just laying around, always feeling like I should at least be reading something engaging or watching an interesting movie or taking care of a writing project or two. So after waking up far too early on Sunday, my version of laying low was organizing our baking cupboard, getting our whole grain flours in order, putting on a pot of tea, and getting to work slicing rhubarb. While my to-do list was left alone, I did bake these Rhubarb Custard Crisp Bars, and I’ve been thankful to have them around. Little slices go well with tea. I’ve learned today they’re also quite nice for breakfast. The tart rhubarb is balanced with just enough sugar (they’re not at all too sweet), the spelt crust brings out a buttery toastiness, and the nutty oat topping will remind you of every good fruit crisp you’ve eaten. They’ll remind you of late spring and gentle sunshine and of not being cooped up inside.
If you’ve never worked with spelt flour before, it’s pretty wonderful. It’s a great entry way into whole-grain baking, so if you often experiment with whole wheat flour and are looking for something new, today’s your day. Kim Boyce, author of my very favorite baking book, Good to the Grain, describes spelt flour as having a “slightly tart aroma” yet being “distinctly sweet.” It substitutes 1:1 for all-purpose flour or whole-wheat flour for most recipes, so you can feel free to experiment away. For these bars, I used a recipe I’ve been looking forward to using from Chicken and Egg but made some significant changes, using whole-grain flour, taking down the sugar by half, and adding my crumble topping I like to use on pies and crisps. The result is a sturdier bite of rhubarb crisp, one you can actually hold in your hand and bring to the couch with you, if need be. Although they’d be just as happy, I think, outdoors on a picnic blanket.
Rhubarb Custard Crisp Bars
By all means, use all-purpose or whole-wheat flour here if that’s what you prefer or have on hand. And for the crumble topping, feel free to use pecans (or any other nut) instead of walnuts. The crust is simple to make, but if you’re more comfortable working with a food processor to blend in the butter and make your crust, that will work just fine, too. Next time I bake these, I’d love to experiment by layering in some fresh sliced strawberries and sprinkling candied ginger on top.
1 cup spelt flour
1/2 cup light brown sugar, packed
1/8 teaspoon kosher salt
1/2 cup (1 stick) cold unsalted butter, cut into 1/2-inch cubes
3/4 cups granulated sugar
1/3 cup spelt flour
3/4 teaspoon baking powder
2 eggs plus 1 egg yolk
1/2 teaspoon vanilla extract
1/4 teaspoon ground ginger
3 1/2 cups thinly-sliced rhubarb (about 1 1/2 pounds)
1/2 cup spelt flour
1/2 cup oats
1/4 cup light brown sugar, packed
Pinch kosher salt
1/4 teaspoon ground ginger
1/2 cup walnuts, roughly chopped
4 tablespoons unsalted butter, melted
Preheat the oven to 350 F. Butter a 11 x 7 inch glass baking pan.
Stir together the spelt flour, brown sugar and salt in a small bowl until combined. Work the butter into the flour mixture with a pastry blender or your fingertips until the butter is evenly distributed and the size of small pebbles. The mixture should be dry and crumbly.
Press the mixture firmly into the bottom of the pan to form the crust. Bake for 20 minutes or until the crust is turning a nice golden brown.
For Filling and Topping:
While the crust bakes, whisk the sugar, flour, baking powder and salt together in a medium bowl.
In a separate medium bowl, whisk together the eggs, egg yolk, vanilla, and ground ginger until smooth. Add the dry mixture into the egg mixture and whisk to combine. Add the rhubarb and stir until it’s completely coated.
Make the topping: In a medium bowl, combine the spelt flour, oats, brown sugar, salt, ground ginger, and chopped walnuts. Stir to combine together. Add the melted butter and mix it into the dry ingredients (I use my hands at this point). The crisp topping should be quite clumpy. If it seems to wet or smooth, feel free to add a bit more flour or oats, 1 tablespoon at a time.
Pour the rhubarb filling over the prepared crust. Sprinkle the crisp topping over the top. Bake for 30-35 minutes or until the top if golden brown. Cool for 30 minutes before slicing. Slice and serve slightly warm. They are best on the day they’re made, but if you have leftovers, they keep beautifully covered and refrigerated for up to 2 days.