Slow Cooker Cowboy Casserole

Category: Plan Ahead for Stress-Free Weekdays

This slow cooker cowboy casserole combines browned ground beef with onions and garlic, mixed with beans, diced tomatoes, and frozen corn. Sliced potatoes added last absorb rich flavors as it cooks low and slow for hours. A final sprinkle of melted cheese adds a creamy finish. Perfect for a comforting and filling meal that comes together with minimal effort, offering a balanced blend of protein, vegetables, and hearty potatoes in every bite.

Breanna smiling at the camera.
Created By Breanna
Last updated on Tue, 04 Nov 2025 23:46:36 GMT
A plate of food with a green topping. Save
A plate of food with a green topping. | foodiffy.com

This slow cooker cowboy casserole is a lifesaver on busy days when you want something hearty and satisfying with minimal fuss. It’s packed with familiar ingredients that come together to create a rich, comforting meal that feeds a crowd and fits well in a busy weeknight routine.

I first made this after wanting a no-fuss dinner to throw together before work and it quickly became a family favorite for weekends too.

Ingredients

  • Ground beef: gives the dish its hearty base choose fresh meat with good marbling for flavor
  • Onion and garlic: build a savory flavor foundation fresh onion with firm texture works best
  • Condensed cream of mushroom soup: adds creaminess pick a brand with quality mushrooms for best taste
  • Milk: helps create a smooth sauce full fat gives the richest texture
  • Kidney beans: add fiber and protein rinse canned beans well to reduce sodium
  • Diced tomatoes with green chilies: bring acidity and a subtle kick look for tins with no added sugar
  • Frozen corn: balances the spiciness and adds a touch of sweetness use bright yellow kernels for appeal
  • Chili powder: infuses warmth with mild heat select a fresh batch for vibrant flavor
  • Salt and pepper: season and round out the taste use sea salt and freshly ground pepper for best results
  • Sliced potatoes: make this a filling meal choose waxy potatoes so they hold shape after cooking
  • Shredded cheese: melts beautifully on top cheddar works great but any melting cheese suits

Instructions

Build The Flavor Base:
Cook the ground beef with chopped onion and minced garlic in a skillet over medium heat until the beef is browned and onions soften. This caramelizes the onions and browns the meat creating a rich, savory aroma. Drain any excess fat to keep the dish from becoming greasy.
Combine The Ingredients In The Slow Cooker:
Transfer the cooked beef mixture to the slow cooker and add condensed cream of mushroom soup, milk, kidney beans, diced tomatoes with green chilies, frozen corn, chili powder, salt, and black pepper. Stir everything well so the flavors meld evenly.
Add The Potatoes:
Layer the sliced potatoes on top of the mixture in the slow cooker making sure they are coated with the saucy beef and bean mixture. This ensures the potatoes cook through but remain tender without falling apart.
Set And Forget:
Cover the slow cooker and cook on low for six to seven hours or on high for three to four hours depending on your schedule. This slow cooking allows the flavors to develop fully and the potatoes to soften just right.
Cheesy Finish:
About twenty minutes before serving sprinkle shredded cheese evenly over the top, cover again and let the cheese melt for a luscious, gooey finish that pulls everything together.
A bowl of slow cooker cowboy casserole.
A bowl of slow cooker cowboy casserole. | foodiffy.com

This dish reminds me of cozy family dinners when everyone gathers around the table talking about their day.

Storage Tips

Store leftovers in an airtight container and refrigerate for up to four days. When reheating, add a splash of milk or broth to keep it creamy and prevent drying out. This casserole also freezes well: portion it into freezer-safe containers for meals on busy days.

Ingredient Swaps

Try ground turkey or chicken for a lean protein variation that still delivers plenty of flavor. You can swap corn for peas or diced bell peppers for a different vegetable twist. For a creamier sauce use cream of chicken soup instead of mushroom.

Serving Ideas

Serve with a crisp green salad or steamed green beans to add a fresh contrast to the rich casserole. Cornbread or warm crusty bread on the side helps scoop up every last bite. A dollop of sour cream or sliced jalapeños on top adds a nice kick.

A bowl of slow cooker cowboy casserole.
A bowl of slow cooker cowboy casserole. | foodiffy.com

This casserole is a comforting family favorite that fits beautifully into busy weeknight routines.

Frequently Asked Recipe Questions

→ Can I substitute ground beef with other meats?

Yes, ground turkey or chicken can be used for a leaner option without sacrificing flavor or texture.

→ What can I add to make it spicier?

A pinch of cayenne pepper or using hotter diced tomatoes with green chilies will add more heat.

→ How do I prevent the potatoes from becoming mushy?

Slice the potatoes evenly and add them on top to absorb flavors without breaking down too much during cooking.

→ Can I prepare this casserole ahead of time?

Yes, you can brown the meat and assemble the ingredients the night before, then cook it the next day for convenience.

→ What types of cheese work best as a topping?

Cheddar works great, but feel free to use your favorite cheese to add a creamy and flavorful finish.

Slow Cooker Cowboy Casserole

Hearty slow cooker dish with ground beef, beans, vegetables, potatoes, and melted cheese.

Preparation Time
20 mins
Time to Cook
360 mins
Overall Time
380 mins
Created By: Breanna

Type of Recipe: Meal Prep

Cooking Difficulty: Suitable for Beginners

Cultural Origin: American

Portion Size: 7 Number of Servings

Dietary Options: ~

Ingredients Required

→ Proteins

01 454 g ground beef

→ Vegetables and Legumes

02 1 medium onion, chopped
03 3 cloves garlic, minced
04 425 g kidney beans, drained and rinsed
05 411 g canned diced tomatoes with green chilies
06 150 g frozen corn
07 600 g sliced potatoes

→ Dairy and Soup

08 1 can (305 g) condensed cream of mushroom soup
09 120 ml milk
10 100 g shredded cheese (cheddar or preferred variety)

→ Seasonings

11 1 teaspoon chili powder
12 1/2 teaspoon salt
13 1/4 teaspoon black pepper

Guide to Cooking

Step 01

In a skillet over medium heat, cook the ground beef with chopped onion and minced garlic until the beef is browned and the onion is softened. Drain excess fat.

Step 02

Transfer the browned beef mixture to the slow cooker. Add condensed cream of mushroom soup, milk, kidney beans, diced tomatoes with green chilies, frozen corn, chili powder, salt, and black pepper. Stir to combine evenly.

Step 03

Layer the sliced potatoes on top of the mixture, ensuring they are fully coated by the beef and bean mixture.

Step 04

Cover and cook on low heat for 6 to 7 hours or on high heat for 3 to 4 hours, depending on your schedule.

Step 05

During the last 20 minutes of cooking, sprinkle shredded cheese evenly over the casserole and allow it to melt before serving.

Extra Suggestions

  1. For added heat, include a pinch of cayenne pepper or select a spicier variety of diced tomatoes with chilies.
  2. Substitute ground beef with ground turkey or chicken for a leaner alternative.
  3. Choose your preferred cheese type for topping to customize flavor.

Necessary Equipment

  • Skillet
  • Slow cooker

Allergen Info

Always check ingredient labels for allergens, and talk to a health expert if you’re unsure.
  • Contains dairy and potential allergens from canned ingredients.

Nutritional Info (Per Serving)

Nutrition facts are for general information and shouldn’t replace professional health advice.
  • Energy (Calories): 500
  • Fats: 25 g
  • Carbohydrates: 45 g
  • Protein: 32 g