#### **Step 1: Sauté the Beef & Aromatics**
Set the **Instant Pot to "Sauté" mode** and add a little oil.
Add **ground beef and diced onion**, cooking until beef is browned (**about 5 minutes**). Drain excess fat.
Stir in **garlic and taco seasoning**, cooking for **1 minute** until fragrant.
#### **Step 2: Add the Liquids & Pasta**
Pour in **diced tomatoes, salsa, tomato sauce, beef broth, salt, and pepper**. Stir to combine.
Add **uncooked pasta**, pressing it down into the liquid (do not stir).
#### **Step 3: Pressure Cook**
Secure the **Instant Pot lid** and set the valve to **Sealing**.
Select **"Pressure Cook" or "Manual" mode** and set to **4 minutes** on HIGH pressure.
Once done, do a **quick release** by carefully turning the valve to **Venting**.
#### **Step 4: Add the Cheese & Finish**
Stir in **shredded cheese and sour cream** until melted and creamy.
Taste and adjust seasoning if needed.
#### **Step 5: Serve & Enjoy**
Garnish with **cilantro, avocado, or jalapeños** if desired.
Serve warm with **tortilla chips, garlic bread, or a side salad**.