Heat oven to 375°. Place spinach in a clean kitchen towel and squeeze over sink to remove as much liquid as possible.Advertisement
Heat a skillet over medium. Add bacon and cook 6 to 8 minutes, until crispy. Remove to a plate, reserving 2 tbsp bacon fat.
Brush a 13 x 9-inch baking dish with 1 tbsp bacon fat. In a large bowl, mix 1 tbsp bacon fat with flour and next 5 ingredients until well combined. Stir in spinach, scallions, cheese and bacon. Spread into greased baking dish. Bake 30 to 35 minutes, until top starts to turn golden brown.
Cool slightly, then cut into triangles. Serve warm or at room temperature.