Step 1
Core cabbage from the bottom being careful not to split the head to keep leaves whole.
Step 2
Fill a large pot halfway with water and bring to a boil. Carefully submerge the cored cabbage into the water cover and boil for 8 minutes.
Step 3
Carefully remove cabbage from water. Use tongs and a spatula to gently separate outer leaves and lay them on a clean plate. Continue removing leaves; when leaves resist removal return cabbage head to boiling water. Cook another 6 to 8 minutes. Repeat procedure until leaves are less than 4 inches in size. Chop remaining cabbage and set aside. Drain water from the pot and return it to the stove.
Step 4
Add butter to the pot and heat over medium heat. Add onion and cook until translucent 3 to 5 minutes. Add ketchup vinegar garlic Worcestershire sauce thyme marjoram onion powder and salt. Bring to a light boil about 3 minutes. Add diced tomatoes. Cover and simmer sauce until needed.
Step 5
Combine ground beef 1 cup cooked white rice eggs black pepper and garlic powder in a bowl. Use hands to mix filling well.
Step 6
Place a rack inside a multi-functional pressure cooker (such as Instant Pot®). Add 1 cup water.
Step 7
Meanwhile assemble cabbage rolls on a clean cutting board. Lay 1 cabbage leave with stem facing you and outer surface of leaf facing down. For larger leaves place 2 tablespoons meat filling on the leaf. Roll up to center first tuck in left and right sides and continue rolling to completely enclose filling. Place rolls seam-side down in a single layer on the rack in the Instant Pot®. Cover layer with 1/2 to 1 cup of sauce. Create another layer of rolls and cover with sauce. Repeat to within 1 inch of the top of the Instant Pot®; if you have excess rolls cook another batch separately.
Step 8
Close and lock the lid. Set the vent to sealing and select high pressure according to manufacturer's instructions; set timer for 18 minutes. Allow 10 to 15 minutes for pressure to build.
Step 9
Release pressure using the natural-release method according to manufacturer's instructions for 15 minutes. Release remaining pressure carefully using the quick-release method according to manufacturer's instructions about 5 minutes. Unlock and remove the lid.
Step 9
Carefully remove rolls from the pot using tongs and transfer to a casserole dish. Cover with aluminum foil. Remove wire rack from pot. Turn Instant Pot® to saute mode.