Transfer the vegetables to a large bowl. Add the tomatoes, oregano, red pepper flakes, rice, water, lemon juice, crumbled bacon, and salt and pepper. Stir to combine.
Add 1 tablespoon of the butter to the same cast-iron skillet over medium heat. Once the butter has melted, pour in the rice mixture. Add the smoked sausage slices and top with bread crumbs. Dot the remaining 2 tablespoons of butter all over the bread crumbs.
Cover with foil and bake for 45 to 60 minutes. Remove the foil and broil 4 to 6 minutes to toast bread crumbs and crisp sausage.
Notes
For a vegetarian version of this dish, skip the bacon and sausage and substitute 2 tablespoons of olive oil for the bacon grease.
Recipe by Southern Cast Iron at https://southerncastiron.com/carrie-moreys-hot-little-suppers/