How to Make It
Preheat oven to 400°F. Cook bacon in a large skillet over medium-high, stirring occasionally, until crispy, 5 to 6 minutes. Add onion; cook, stirring occasionally, until translucent, about 4 minutes. Add collards; cook, stirring occasionally, until wilted, 5 to 6 minutes. Stir in vinegar; remove from heat.
Transfer bacon mixture to a large bowl; stir in rice, peas, stock, salt, and eggs until combined. Pour mixture into a 13- x 9-inch baking dish. Cover with aluminum foil. Bake in preheated oven until liquid is absorbed, about 50 minutes. Remove from oven; let stand 5 minutes. Sprinkle with tomato and scallions.