Preheat your oven to 425℉. Prepare and measure all ingredients before starting.
Heat a pan (deep enough to hold 3 cups of liquid) over medium-high heat.
Sautee onions and garlic until fragrant ~ 3-5 minutes.
Add the steak sauce, Worcestershire sauce, and spices to the pan. Stir to combine.
Give the tapioca starch and water mixture a quick stir, then add it to the pan. Mix well and bring to a simmer.
Simmer for 5–10 minutes, stirring occasionally, until the mixture thickens to a gravy-like consistency.
Place the vegetables in a baking dish.
Once the gravy reaches your desired consistency, turn off the heat and pour it over the vegetables in the baking dish. Mix well to coat the vegetables evenly.
Cover the baking dish with a lid and bake for 1 hour and 30 minutes.
Serve and enjoy!