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Dinner · Part 2 of 3: Instructions

Slow Cooker Buttery Turkey Tenderloin with Green Beans and Potatoes Step-by-step instructions

Slow cooker turkey tenderloin with green beans and red potatoes in a savory onion sauce.
Prep
Cook
Total
Serves
4
Includes 5 min resting

Before you start

Before starting, ensure that all ingredients are measured and ready. Trim the fresh green beans by removing the woody ends, and wash the baby red potatoes thoroughly before halving them. If the turkey tenderloins were frozen, verify they have been completely thawed in the refrigerator overnight.

Having your slow cooker clean and placed on a stable, heat-resistant surface makes the assembly process smooth and efficient, allowing you to get the meal started without any unnecessary delays.

Ingredients at a glance (5)
  • 2 lb turkey tenderloins
  • 1 lb fresh green beans, trimmed
  • 1 lb baby red potatoes, halved
  • 1 packet onion soup mix
  • 1 cup buttery broth

Instructions

Layering the ingredients

  1. Prepare the slow cooker
    Place the turkey tenderloins into the base of the slow cooker, laying them flat to ensure even cooking. Arrange the halved baby red potatoes around the meat, then add the green beans on top.
    Look for Turkey is centered and vegetables are distributed evenly.
    Tip Avoid overcrowding the slow cooker to ensure the heat circulates properly.

The slow cooker is assembled with the turkey at the base and the vegetables arranged on top. Everything should be neatly layered without being packed too tightly, allowing for proper heat distribution during the cooking cycle. Ensure the slow cooker is plugged in and ready to begin once the lid is secured, creating a sealed environment for the braising process to commence effectively.

Seasoning and liquid

  1. Add seasoning and liquid
    Sprinkle the onion soup mix evenly over the turkey and vegetables. Pour the buttery broth over the ingredients to provide moisture for the braising process.
    Look for Liquid is poured slowly to coat the ingredients.
    Tip Pouring the broth slowly helps keep the soup mix distributed over the meat.

The onion soup mix and buttery broth have been added to the slow cooker. The soup mix should be evenly distributed across the surface to ensure consistent seasoning throughout the dish.

The broth should be poured carefully to moisten the base without drowning the vegetables. At this stage, the slow cooker is covered and the cooking process begins, requiring no further intervention until the timer nears completion.

Cooking and resting

  1. Cook and serve
    Cover the slow cooker and cook on low for 4 to 6 hours. Ensure the turkey reaches an internal temperature of 165°F (74°C). Allow the meat to rest for at least 5 minutes before slicing and serving.
    Look for Turkey is tender and opaque throughout.
    Safe temperature 165°F (74°C) internal temperature (poultry)
    Tip Use a meat thermometer to check the thickest part of the tenderloin.

The turkey has reached the required internal temperature of 165°F (74°C) and the vegetables are tender. The broth has thickened slightly into a flavorful, savory sauce. Before serving, the meat is removed to a cutting board to rest for at least 5 minutes. This ensures the turkey stays moist when sliced, and the final dish is ready to be plated with the vegetables and drizzled with the cooking juices.

Common mistakes

A common mistake is overcrowding the slow cooker, which can prevent the vegetables from cooking evenly and result in excess liquid that dilutes the flavor of the onion sauce.

Another error is checking the food too frequently; opening the lid lets out steam and heat, significantly increasing the cooking time each time it occurs. Finally, be careful not to overcook the green beans; if you prefer them to have a slight snap, add them during the final hour of cooking rather than at the start.

How to tell it’s done

The turkey is ready when it is opaque throughout and reaches a safe internal temperature of 165°F (74°C) at the thickest point. The potatoes should be fork-tender and easily pierced, while the green beans should be soft but still hold their shape.

Using a digital meat thermometer is the most accurate way to ensure the turkey is properly cooked. Remember to let the meat rest for 5 minutes after removing it from the slow cooker to allow the juices to redistribute for the best texture.

  • Poultry: 165°F (74°C) in the thickest part

Coming up in Part 3: common questions

  • Can this be made in a pressure cooker?
  • Is it possible to use frozen turkey tenderloins?
  • Can other vegetables be used instead of green beans?

Also in Part 3: variations (Garlic Herb Turkey, Spicy Cajun Turkey), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)