Molasses Shoo-Fly Cake

Molasses shoo-fly cake is one of the great Pennsylvania Dutch sweets, a humble pie that earned its name from the swarms of flies that supposedly descended on its sugary surface as it cooled on Amish farmhouse windowsills. The recipe is a study in contrast: a layer of dark, glossy molasses liquid (just molasses, beaten egg yolk, and baking soda dissolved in boiling water) gets spooned into a pastry-lined pan in alternation with a spiced crumb mixture made from flour, brown sugar, shortening, cinnamon, nutmeg, ginger, cloves, and salt.

This is the ‘wet bottom’ version, where the molasses mixture sinks slightly during baking and creates a sticky, almost custard-like layer beneath dry, sweet, crumbly streusel on top. Bake hot to set the crust edges, then drop the heat to finish the filling. The result is half pie, half cake, all comfort. Cut into wedges and serve with strong black coffee. The traditional Pennsylvania Dutch move is to dunk the wedge straight into the cup.

Pro Tips

• Use unsulfured molasses, not blackstrap. Blackstrap is too bitter and overwhelms the spices. Grandma’s or Brer Rabbit Mild work well.
• Dissolve the baking soda fully in the boiling water before mixing with the molasses. Lumps of baking soda leave bitter pockets in the finished pie.
• The crumb mixture should look like coarse sand, not paste. Cut the shortening in lightly with two knives or a pastry blender, don’t work it.
• Top layer should always be crumbs, not liquid, as the directions specify. The crumb top is the visual signature of the cake and absorbs steam during baking.

Variations

• Use sorghum syrup instead of molasses for a milder, more grass-noted version (closer to what Mennonite kitchens often use).
• Add a quarter cup of chopped walnuts to the crumb topping for crunch.
• Bake in a 9-inch square pan without crust for a more cake-like, less pie-like version (the ‘dry bottom’ variation).