Pressure cooker/Multicooker: Follow the same instructions but in step 5 use your stovetop pressure cooker or the sauté function of the Instant Pot set on high to sear the meat and sauté the vegetables. Complete through step 7. Set the pressure cooker to cook under high pressure for 1 hour. Allow the steam to release naturally. Continue with steps 9 and 10.
Slow Cooker: Follow the same instructions but in steps 5 and 6, use a large, heavy-bottom skillet on the stovetop to sear the meat and sauté the vegetables. In step 7, transfer ½ to ⅔ of the vegetables to the slow cooker. Add the brisket, fat side up and top with the remaining vegetables. Add the liquid, sliced garlic, bay leaf and thyme. For step 8, cook for 5 hours on high or 9 hours on low and proceed with the instructions. Continue with steps 9 and 10.
