• Preheat oven to 350°F degrees. Prepare a 9x13-inch baking dish with a spritz of nonstick cooking spray or a light coating of butter. Set aside.

Make And Assemble the Base Layers:

• In a skillet over medium-high heat, fry the sausage patties until cooked through, flipping once, which takes about 5-7 minutes. Remove from the skillet and let them cool. Once cool enough to handle, slice them in half horizontally.
• Arrange the sausage patty halves in a single layer in the bottom of the baking dish.
• In a medium mixing bowl, add the almond flour, baking powder, salt, eggs, and butter. Whisk until well combined into a smooth batter. Use a measuring spoon to place dollops of batter all over the sausage patties. Do not worry about perfection.
• Sprinkle the bacon crumbles on top of this layer.
• Sprinkle the cheese on top of the bacon layer.

Make The Custard:

• In a large measuring cup, whisk together the eggs and half-and-half. Pour the mixture evenly over the entire casserole.

Bake The Casserole:

• Bake uncovered until the top begins to brown, the center is set and no longer jiggly when you shake the pan, and a knife inserted into the center comes out clean or mostly clean, about 25 minutes.
  
• Let the casserole rest at room temp for 5 minutes before slicing. Serve warm