Step 1

Wash, core and cut tomatoes in half. Over a large bowl, squeeze tomatoes to release juices, pulp and seeds and discard.

Step 2

Cut tomatoes in half (so each whole tomato has been cut into 4 pieces and place them in the liner of the Instant Pot.

Step 3

Sprinkle 1 teaspoon each of oregano, basil, Italian seasoning and garlic salt over top of the tomatoes – Do NOT Stir.

Step 4

Lock the lid and place the valve in the Sealing position. Pressure Cook/Manual on HIGH for 20 minutes.

Step 5

When cooking time expires, allow for 10 minutes of Natural Pressure Release.

Step 6

Release any remaining pressure and carefully open the lid.

Step 7

Using an immersion blender, blend the tomatoes and spices together until smooth.

Step 8

Add in the sugar (if using) and tomato paste. Use the immersion blender to blend until incorporated.

Step 9

Add the remaining oregano, Italian seasoning and garlic salt. Blend until incorporated. Taste sauce and add additional seasonings as desired.

Step 10

Keep Warm with the lid off until desired thickness is achieved. Sauce will continue to thicken as it cools.