Skip to content
Allquickyrecipes Search recipes

Dinner · Part 1 of 3: Ingredients

Slow Cooker Garlic Butter Green Beans and Mushrooms

A high-angle shot of tender green beans and sliced mushrooms in a rich garlic butter sauce, served in a white bowl.
Prep
Cook
Total
Serves
4

Elevate your vegetable game with this incredibly simple, hands-off slow cooker recipe that delivers perfectly tender garlic butter green beans and savory mushrooms every single time. It is the ultimate solution for home cooks who need a reliable, delicious side dish that requires minimal effort while providing maximum comfort and flavor for any meal.

The beauty of this recipe lies in its simplicity. By utilizing a slow cooker, the green beans and mushrooms steam gently in a rich, flavorful broth of melted butter and minced garlic.

This slow-cooking process allows the garlic to infuse deep into the beans while the mushrooms soften and release their umami, creating a cohesive and satisfying dish that pairs beautifully with roasted meats, poultry, or simple pasta dishes. It is a foolproof method that guarantees consistent results without the need for constant monitoring or stovetop attention.

Ingredients

Makes 4 servings · serves 4
  • 1 lb fresh green beans, trimmed
  • 8 oz white mushrooms, sliced
  • 3 cloves garlic, minced
  • 4 tbsp unsalted butter, melted
  • 1/4 cup vegetable or chicken broth
Contains: milk

Why this recipe works

The slow cooker method provides a gentle, moist-heat environment that is ideal for steaming vegetables like green beans. Unlike boiling, which can lead to mushy results, the slow cooker maintains the structural integrity of the beans while ensuring they reach the perfect level of tenderness.

The enclosed space allows the aromatics to circulate thoroughly, ensuring every bite is infused with the essence of garlic and butter.

Ready to start cooking right away??? Jump to Part 2 ? Step-by-Step Method ?

By layering the ingredients, the natural juices from the mushrooms blend with the melted butter and broth to create a light, flavorful glaze. This self-basting technique eliminates the need for extra fats or heavy sauces. The consistent, low heat prevents the garlic from scorching, which often happens in a frying pan, resulting in a cleaner, sweeter flavor profile that highlights the freshness of the vegetables.

Notes and substitutions

Fresh green beans are essential for this recipe, as they hold up best during the slow-cooking process. Ensure they are thoroughly washed and the stem ends are removed before adding them to the slow cooker.

If the beans are particularly thick, they may require a few extra minutes of cooking time, while thinner haricots verts will cook more quickly and should be monitored closely to maintain their bright color and snap.

The choice of mushrooms can significantly alter the outcome. While standard white button mushrooms are excellent for their mild flavor and texture, cremini or baby bella mushrooms can be used for a slightly earthier taste.

Ensure the mushrooms are sliced to a uniform thickness, about a quarter-inch, to guarantee they cook at the same rate as the green beans. Use a high-quality unsalted butter to maintain control over the final salt level.

  • unsalted butter: salted butter (reduce added salt if using)
  • vegetable broth: chicken broth or water

Equipment

  • Slow cooker
  • Small pitcher
  • Knife
  • Cutting board

Coming up in Part 2: the method

  1. Layering the vegetables · 1 stepPrepare the slow cooker base
  2. Adding the aromatics and liquids · 1 stepAdd mushrooms and aromatics
  3. Slow cooking the dish · 1 stepCombine and slow cook

Up next · Part 2 of 3

3 steps · 3 h of cooking · what to look for at each stage

Step-by-step instructions (Part 2)