Set Instant Pot to saute. When it says HOT, add oil.
Add ground beef, onions and garlic to pot. Cook until meat is browned, stirring to break up meat. Season with salt, pepper, thyme and Worcestershire sauce as it is cooking.
Add tomato paste, water and beef base. Stir to scrape up any bits stuck to the bottom of the pot. Add elbows. Press cancel to stop Saute.
Lock lid in place and seal valve. Cook on high pressure for 4 minutes. (Cook time may vary with the kind of pasta you choose to use). Quick release the pressure. Stir in half of the cheese. Serve remaining cheese on the side.
Did you know that you can buy large bags of peeled, ready to use garlic from Sam’s and store the garlic in the freezer? Then just remove whatever your recipe calls for and use it like you would fresh garlic, except without the hassle of peeling it! This recipe is a wonderful way to use those bags of garlic. I roast a pound or so at a time, then mash them and store them in a jar in the refrigerator. Then, when I get ready to make something with garlic, I just take a spoonful out and add it to whatever I am making. It is so easy and very convenient!!!