Clean, wash the Baby Back Ribs and dry with paper towel. Remove the white membrane from the back of the ribs with a knife. Use butter knife and paper towel; membrane might be slipping through the fingers. Cut the ribs in sections, about 4-5 ribs at a time.
Season the Baby Back Ribs with salt, pepper, red paprika and rub minced garlic in the ribs. Reheat pressure cooker on high heat. (If you are using Instant Pot, it's sear button and put it on high). Add 2 tbsp of canola oil and sear each side of the ribs, approximately 1 min each side.
Once seared, remove the ribs from pressure cooker and place them on a plate, set aside. Cut onion on large pieces and add in pressure cooker. Stir and cook for 2 minutes, add water, liquid smoke and stack the ribs back in the pressure cooker.
Close the lid of pressure cooker and check if safety button is on right position. If you are using traditional pressure cooker, cook first 15 minutes on high heat, then turn on medium heat and cook for another 30 minutes. If you are using Instant Pot, choose pressure cook program and set it for 45 minutes high pressure.
Turn off the heat and release the pressure, either naturally (let it sit for 10 minutes until the pressure will be released) or press the button release pressure manually. Open the lid carefull and remove the ribs one by one from the pressure cooker. Place them on baking sheet.
Now you have 2 options. You either preheat you BBQ or oven.