Slow Cooker Pepper Steak

Highlighted Section: Satisfying Main Courses for Every Occasion

Slow-cooked beef mingles with vibrant red and green peppers along with onions for the perfect blend of flavor and tenderness. The dish features a sauce enriched with soy sauce, honey, and a hint of ginger and garlic. Tapioca flour helps achieve a silky, hearty texture. Serve over rice or noodles for a satisfying, no-fuss dinner that fits busy schedules and delivers on taste. Prep is minimal, and the slow cooker lets you enjoy a hands-off approach while achieving excellent results.

A man named Alex is holding a wooden spoon.
Created By Alex
Last revised on Thu, 08 Jan 2026 20:57:22 GMT
A bowl of beef and peppers. Add to Favorites
A bowl of beef and peppers. | buzkitchen.com

Savory slow cooker pepper steak delivers comforting flavors with almost zero effort which makes it a perfect set it and forget it dinner. The combination of tender beef and colorful bell peppers in a rich sauce always brings my family to the table and leftovers are just as good the next day.

I first tried this recipe when my son started soccer practice and we needed something ready when we walked in the door. Now it is my go to meal for busy days because everyone in the house loves it and I never stress over timing.

Ingredients

  • Flat iron steak: Provides beefy tenderness after hours of slow cooking Look for beef that is bright red and marbled with thin fat lines for the best results
  • Red bell pepper: Adds sweetness and vibrant color Choose peppers that feel heavy for their size and have a glossy unblemished skin
  • Green bell pepper: Gives a slight bitterness and balance Firm peppers with deep green color work best
  • Yellow onion: Lends gentle sweetness and subtle bite Yellow onions should feel dense and papery on the outside
  • Tapioca flour: Thickens the sauce for a glossy coating on the meat and vegetables Check the international aisle or gluten free section if needed
  • Garlic paste: Delivers bold garlic flavor and saves chopping Buy tubes in the produce section for convenience
  • Ginger paste: Brightens the dish with warmth and zing Look for fresh tubes with a strong aroma
  • Soy sauce or tamari: Brings umami savory taste Go for low sodium if possible and use tamari for gluten free
  • Beef broth: Infuses extra savory depth Opt for cartons with a short ingredients list
  • Honey: Rounds out flavors with a delicate sweetness Use a mild type to avoid overpowering the sauce
  • Pepper: Provides background warmth Freshly cracked is best for aromatic lift

Instructions

Slice the Steak:
Thinly slice the flat iron steak against the grain This means cutting across the muscle fibers which guarantees tenderness once the beef is cooked through
Prep the Vegetables:
Remove the tops ribs and seeds from both bell peppers Slice them into thin strips that will hold texture during slow cooking Do the same with the yellow onion either thin slices or pull into petals for more texture
Layer in the Slow Cooker:
Place the sliced steak and vegetables in the slow cooker spreading them out evenly so everything will cook at the same rate and soak in the sauce
Mix the Sauce:
In a small bowl whisk the tapioca flour with the same amount of cold water until perfectly smooth No lumps should remain as this ensures a silky sauce later
Combine the Liquids and Flavorings:
Add soy sauce or tamari beef broth honey garlic paste ginger paste and pepper to the tapioca slurry and whisk until you have a unified mixture This is your flavor bomb
Pour and Cover:
Pour the sauce mixture evenly over the meat and vegetables in the slow cooker Place the lid on and set to cook on high for three to four hours or on low for six to nine hours In my experience the lower slower option makes the most tender beef
Finish and Serve:
Once the steak is fork tender and the sauce has thickened give it a gentle stir before serving Spoon the mixture over hot rice noodles or even cauliflower rice for a lighter touch
A bowl of rice with meat and vegetables.
A bowl of rice with meat and vegetables. | buzkitchen.com

My favorite part is the sauce It is glossy and tangy with a gentle heat and when I was growing up my dad always snuck an extra scoop over his rice just for that magic It is a dish we now make together every winter

Storage Tips

Cool leftovers completely before storing in an airtight container Refrigerate for up to four days For longer storage freeze in portions up to two months To reheat gently warm on the stovetop or microwave stirring occasionally

Ingredient Substitutions

If you cannot find flat iron steak feel free to use flank steak or sirloin Strips of chicken also work well in this sauce and offer a lighter alternative Bell peppers are flexible so try orange or yellow varieties for a milder sweetness Tamari replaces soy sauce for an easy gluten free version

Serving Suggestions

Serve pepper steak piled over steaming white rice or ribbon like noodles Add quickly stir fried broccoli or snap peas to the side for extra crunch For a lighter dish try spooning the beef and sauce over a bed of baby spinach where the heat will gently wilt the greens

Cultural and Historical Context

Pepper steak draws inspiration from Chinese American takeout classics but comes together easily at home With roots similar to popular stir fries it adapts beautifully for the slow cooker transforming lean beef and vibrant peppers into a comforting centerpiece

Seasonal Adaptations

Use rainbow peppers at summer farmers markets for extra sweetness Add sliced mushrooms or carrots in cooler months for heartiness Switch out honey for brown sugar if that is what you have on hand

Success Stories

I have a neighbor who always asks for this recipe after smelling it slow cooking through our shared wall One friend once made double batches for new parents as a freezer gift and it was a huge hit It warms up so tender and flavorful even days later

Freezer Meal Conversion

To make ahead just add raw steak sliced peppers onions and sauce ingredients to a freezer bag Seal it well and freeze flat When you are ready to cook thaw overnight and dump right into the slow cooker It tastes just as fresh as if you prepped it that day

A plate of food with rice and meat.
A plate of food with rice and meat. | buzkitchen.com

This slow cooker pepper steak is a cozy family classic that gets even better the next day. Try it once and it might become your weeknight favorite too.

Recipe FAQs

→ Can I use a different cut of beef?

Yes, flank steak or sirloin work well if flat iron steak isn't available. Just slice thinly against the grain for tenderness.

→ How do I keep the peppers from getting too soft?

Add the peppers halfway through cooking time for a crisper texture, or adjust based on your preference.

→ Is it possible to make this dish gluten-free?

Absolutely! Use tamari instead of regular soy sauce for a gluten-free option.

→ What sides go well with this meal?

Serve over steamed rice, noodles, or even cauliflower rice for a low-carb alternative.

→ Can leftovers be refrigerated or frozen?

Yes, store leftovers in an airtight container in the fridge for up to 3 days or freeze for up to 2 months.

→ How do I thicken the sauce?

Tapioca flour thickens the sauce, but you can also use cornstarch mixed with water as a substitute.

Slow Cooker Pepper Steak

Beef and peppers simmered in savory sauce for effortless, flavorful comfort. #slowcooker #beef #comfortfood #easymeals #peppers

Preparation Time
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Cooking Time
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Created By: Alex

Category: Main Dishes

Skill Level: Moderate

Cuisine Type: American Chinese

Makes: ~

Dietary Preferences: Dairy-Free

Ingredients

→ Main Ingredients

01 1 1/2 pounds flat iron steak, sliced thinly against the grain
02 1 red bell pepper, seeded and sliced thin
03 1 green bell pepper, seeded and sliced thin
04 1 small yellow onion, sliced thinly or into petals

→ Sauce and Seasonings

05 2 tablespoons tapioca flour
06 1 teaspoon garlic paste
07 1 teaspoon ginger paste
08 1/4 cup soy sauce (use tamari for gluten-free option)
09 1/4 cup beef broth
10 2 tablespoons honey
11 1/2 teaspoon ground black pepper

Steps

Step 01

Using a sharp knife, thinly slice the flat iron steak against the grain.

Step 02

Remove the tops, ribs, and seeds from both bell peppers and slice them thinly. Remove the outer layer and ends from the onion, then slice thinly or separate into petals.

Step 03

Transfer the sliced steak, red bell pepper, green bell pepper, and onion to the slow cooker insert.

Step 04

In a small bowl, combine tapioca flour with 2 tablespoons of cold water and whisk until smooth.

Step 05

Add garlic paste, ginger paste, soy sauce, beef broth, honey, and ground black pepper to the tapioca mixture. Whisk until thoroughly combined.

Step 06

Pour the prepared sauce mixture over the steak and vegetables in the slow cooker and mix lightly to coat.

Step 07

Cover the slow cooker and cook on high for 3 to 4 hours or on low for 6 to 9 hours, until the steak is tender and the sauce is thickened.

Step 08

Serve the pepper steak hot, accompanied by rice or noodles if desired.

Notes

  1. For best texture, ensure steak is sliced against the grain and sauce is whisked until smooth before adding to the slow cooker.
  2. For gluten-free preparation, substitute regular soy sauce with tamari.

Tools You'll Need

  • Sharp chef's knife
  • Cutting board
  • Slow cooker
  • Mixing bowls
  • Whisk

Allergy Information

Double-check each ingredient for potential allergens, and always consult a professional if you're unsure.
  • Contains soy; use certified gluten-free tamari and verify all package labels for allergens.