I have a few old rectangular cookie pans with raised sides, which I found in a resale shop many years ago. They measure 12" x 17 3/4". Aluminum disposable sheets found in the grocery store will work, however, the aluminum will not brown the bottom of the crust as nicely as a dark pan. Secondly, those pans are not stable. They can easily flex if not supported well while you handle them. So if that's the route you go - be very careful with them.
The nice thing too about making sheet pies is how many people can eat from a single sheet for very little cost. A round pie may feed 6 - 8 people depending on slice widths and pie dish size. A sheet pie instantly serves a dozen right off using the same amount of fruit as for a single round pie. For this rhubarb-strawberry version, I've added a crumble topping of the sort commonly used for fruit crisps. There is less sugar than usual, to allow the tartness of the rhubarb and flavour of the strawberry to sing. If you want more sweetness - go ahead and add a bit more sugar to both the filling and the topping. However, a drizzle of maple or agave syrup would easily provide a bit more sweet if desired.
I pulled six stalks of rhubarb. Rhubarb is pulled, not cut. Simply reach down as close to the stem bottom as possible and pull. It should come out cleanly. Discard the leaves as they are toxic. This is ruby red rhubarb - I don't know the variety name but it is not the more commonly found green variety. These were crowns I dug up from my mother's farm garden. The stalks are exactly as you see - a gorgeous red exterior and they have neither a raw/bitter taste or extreme sourness like darker green/red rhubarbs can. With the green variety, I would add an extra 1/2 cup white sugar to the filling.
Rhubarb-Strawberry Sheet Pie with Crumble Topping
- 5 cups cut-up red rhubarb - (6 stalks)
- 1 1/2 cup cut-up strawberries
- 3 large eggs
- 1 cup white sugar
- 3 Tbsp. all-purpose flour
- 1 Tbsp. butter
Crumble Topping
- 1 cup all-purpose flour
- 1 1/2 cup large flake oatmeal
- 1 cup brown sugar
- 2/3 cup butter
- pinch of sea-salt
Pie Dough for a 9-inch double-crust pie or use mine below.
- 2 1/2 cups all-purpose flour
- 1 tsp. salt - I use sea-salt
- 2/3 cup lard (slightly rounded)
- 7 Tbsp. cold water.
Make your pie crust. Form it into a log approximately the length of your sheet and roll that out directly onto the sheet with a floured roller. Roll it out from the middle toward the edges. Use your fingers to push the dough up the pan sides. Flute and set aside.
Make the crumble topping. Measure flour, sugar, salt and oatmeal together. Measure and cut in the butter. All this can be done with a blade-fitted food processor. Aside from my dislike of rolling out pie crusts, I also dislike cleaning the food processor and all its gadgets. So I use a pastry cutter. If I was still home-schooling with a houseful of little ones, I'd go back to the food processor. Set the crumble aside.
Cut lengthwise the stalks which are wider. Chop the stalks into medium size dice. Cut up some strawberries. The amount of fruit is a bit flexible. Anywhere from four to six cups of fruit will work. I used more rhubarb to strawberries. I could have used all rhubarb. The total amount of fruit is approximately five cups rhubarb plus the one cup of strawberries. Don't get too hung up here. It really is quite flexible. I actually added the strawberries last minute.
Beat the eggs with the sugar. Add the flour and butter. Beat in. Mix this into the fruit. Spread the rhubarb mix onto the pastry. There will be a fair bit of liquid from the eggs and sugar mixture, but that will set up in the baking.
Top with the crumble. Bake in preheated 375F oven x 40 - 45 minutes. The topping will be golden and the pastry will have slightly pulled away from the pan sides. Enjoy!
