Instant Pot Beef Nacho Casserole

If you have an Instant Pot, I hope you are loving it as much as I love mine. It makes getting dinner on the table so much easier, especially on busy nights. Today, I am sharing this Instant Pot Beef Nacho Casserole, a quick and flavorful meal that comes together in about 30 minutes.

This is another easy Mexican-inspired dinner, so naturally it was a big hit with my family. The casserole itself is made with ground beef, onion, taco seasoning, rice, diced tomatoes, corn, and green chiles. Everything cooks together in the Instant Pot for a hearty, flavorful meal with very little cleanup.

One of my favorite things about Mexican-style dishes is all of the toppings. I love the contrast between a warm, savory base and cool or crunchy toppings added right before serving.

Two toppings are especially a must for this casserole. The first is crushed Nacho Cheese Doritos. This recipe is a perfect way to use up all of those little chip pieces and crumbs at the bottom of the bag that no one usually wants to eat.

The second must-have topping is sour cream. Its cool, creamy texture perfectly contrasts the warm beef and rice mixture and the crunchy Doritos.

You can also add chopped cilantro or sliced green onions for a little extra freshness and color. They are completely optional, but they make a nice finishing touch.

This Instant Pot Beef Nacho Casserole is quick, easy, family-friendly, and packed with flavor. It is a great option for busy weeknights when you want something satisfying on the table without spending a lot of time in the kitchen.

Ingredients for Instant Pot Beef Nacho Casserole

• GROUND BEEF – Ground beef creates the hearty base of the casserole and adds plenty of savory flavor. An 80/20 or 85/15 blend works well; drain off excess grease after browning if needed.
• ONION – Diced onion adds savory flavor and a little natural sweetness as it cooks with the beef.
• TACO SEASONING – Taco seasoning gives the casserole its Mexican-inspired flavor with a blend of spices like chili powder, cumin, garlic, and onion.
• BEEF BROTH – Beef broth provides the liquid needed to cook the rice in the Instant Pot while adding extra savory flavor.
• LONG GRAIN WHITE RICE – Long-grain white rice makes the casserole filling and absorbs the seasoned broth and tomato juices as it cooks. Avoid swapping in instant rice, since the cook time and liquid needs are different.
• PETITE DICED TOMATOES – Petite diced tomatoes add moisture, acidity, and tomato flavor. The smaller pieces blend nicely throughout the beef and rice mixture.
• CORN – Corn adds sweetness, color, and a little texture. Draining it first helps keep the casserole from becoming too watery.
• DICED GREEN CHILES – Green chilies add mild heat and extra flavor without making the dish overly spicy.
• CHEDDAR CHEESE – Shredded cheddar adds richness and melts into the hot casserole for a creamy, cheesy finish. Sharp cheddar gives the strongest flavor.
• NACHO CHEESE DORITO CHIPS – Crushed Doritos tortilla chips add a salty, cheesy crunch on top. Add them just before serving to keep them crisp.
• TOPPINGS: SOUR CREAM, GREEN ONION, AND/OR CILANTRO – Sour cream adds a cool, creamy contrast to the warm, seasoned casserole. Diced green onions add freshness, mild onion flavor, and a pop of color. Cilantro adds a bright, fresh finish that pairs well with the taco seasoning, tomatoes, and green chiles.

Instructions for Instant Pot Beef Nacho Casserole

Set the Instant Pot to Sauté. Add the ground beef, diced onion, and taco seasoning. Cook for about 5 minutes, breaking up the beef as it cooks, until the meat is fully browned.

Pour in the beef broth and scrape the bottom of the pot well to loosen any browned bits. Turn off the Instant Pot.

Sprinkle the rice evenly over the beef mixture. Top with the diced tomatoes, corn, and green chiles. Do not stir.

Secure the lid and make sure the valve is set to the Sealing position. Cook on High Pressure for 5 minutes.

When the cooking time is complete, allow the pressure to release naturally for 10 minutes. Carefully release any remaining pressure, then remove the lid.

Stir the casserole until everything is well combined.

To serve, spoon into bowls and top each serving with shredded cheddar cheese and crushed Nacho Cheese Doritos. Add sour cream, diced green onions, and fresh cilantro, if desired. Makes 4–6 servings.

Frequently Asked Questions

Can I use a different type of ground meat?
Yes. You can use ground turkey or ground chicken instead of ground beef, although the flavor will be a little lighter.

Do I need to rinse the rice first?
You can, but it is not required. If you do, drain it very well before adding it to the Instant Pot.

Can I use brown rice instead of white rice?
Not with the same cook time and liquid amounts. Brown rice requires a longer pressure-cooking time, so you’ll need to adjust the recipe.

Why shouldn’t I stir after adding the rice and tomatoes?
Layering the ingredients helps reduce the chance of getting a burn notice. Keep the rice over the beef mixture, then add the tomatoes, corn, and chiles on top.

What if I get a burn notice?
Scrape the bottom of the pot well after adding the broth. Any stuck-on bits from browning the beef can trigger the burn warning.

Can I make this casserole spicier?
Yes. Use hot diced green chiles, add jalapeños, or choose a spicier taco seasoning.

Can I make it milder?
Absolutely. Use mild taco seasoning and mild green chiles, then serve spicy toppings on the side.

Can I add the cheese directly to the casserole?
Yes. You can stir some shredded cheese into the hot mixture after pressure cooking, but I like adding it on top so everyone can control how much they want.

When should I add the Doritos?
Add them right before serving. If they sit on the casserole too long, they will lose their crunch.

How should I store leftovers?
Store the beef and rice mixture in an airtight container in the refrigerator. Keep the Doritos and other toppings separate and add them after reheating.

Tips and Tricks

• Deglaze the pot thoroughly. After browning the beef, pour in the broth and scrape up every browned bit from the bottom. This is one of the best ways to prevent a burn notice.
• Layer the ingredients without stirring. Once the rice goes in, add the tomatoes, corn, and green chiles on top and leave everything layered until after pressure cooking.
• Use long-grain white rice. Stick with the type of rice called for in the recipe. Instant rice, brown rice, and other varieties may not cook properly with the same timing and liquid.
• Let the pressure release naturally for 10 minutes. The natural release gives the rice a little extra time to finish cooking and absorb the liquid before you open the pot.
• Add crunchy toppings at the very end. Sprinkle on the Doritos only when you are ready to serve so they stay crisp. Sour cream, green onions, and cilantro are also best added fresh at the table.

FOR MORE RECIPES LIKE THIS, TRY:

• Instant Pot Frito Pie
• Instant Pot Country Dinner
• Instant Pot French Dips
• Instant Pot Pot Roast with Vegetables

Recipe adapted from 365 Days of Slow + Pressure Cooking.