Blend the flour, powdered sugar and butter with a pastry blender until you have fine crumbs. Pat into a greased 9 x 13 pan. Bake at 350° for 15 minutes. Have topping ready to pour on the base when it comes out from the oven.
To make the topping, beat the eggs. Combine the eggs, sugar, flour, salt, baking powder, and rhubarb. Pour this mixture over the base. Return it to the oven and bake for 50 minutes in a 350° oven until lightly browned.
This is a recipe that my Mom shared with me. Happy Mother’s Day Mom.