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Dinner · Part 2 of 3: Instructions

Slow Cooker Braised Fennel in Tomato Coulis Step-by-step instructions

Close up of slow cooker braised fennel wedges in a rich, glossy tomato coulis sauce.
Prep
Cook
Total
Serves
4
Includes 5 min resting

Before you start

Before beginning, ensure your slow cooker is placed on a stable, heat-resistant surface near an electrical outlet. Thoroughly wash the fennel bulbs and trim off the green stalks and root end. Prepare the tomato coulis and have your herbs measured out.

Having all ingredients prepped and ready to assemble will make the process seamless. Ensure you have a serving platter ready and a pair of tongs to transfer the delicate braised fennel without breaking the wedges apart after the long cooking cycle.

Ingredients at a glance (4)
  • 2 large fennel bulbs, trimmed and cut into wedges
  • 1 medium yellow onion, thinly sliced
  • 1 tsp herbes de Provence
  • 1 1/2 cups tomato coulis

Instructions

Assembly Phase

  1. Prepare and Layer
    Trim the fennel bulbs, removing the tough outer layers and fronds, then slice them into thick wedges. Place the fennel wedges in the bottom of the slow cooker insert. Distribute the thinly sliced yellow onion evenly over the fennel wedges, ensuring they are well dispersed to provide flavor throughout the cooking process.
    Look for The fennel should be arranged in a single layer if possible for even cooking.
    Tip Ensure the fennel is cut into uniform wedges so every piece reaches the same tenderness.

At the end of this phase, the slow cooker should be layered with clean, uniform fennel wedges topped with sliced onions. The vegetables should be arranged neatly to allow for even heat distribution. Ensure the herbs are sprinkled evenly across the surface before adding the tomato coulis to create a balanced foundation for the slow braising process.

Seasoning Phase

  1. Season and Add Sauce
    Sprinkle the herbes de Provence over the layered fennel and onions. Pour the tomato coulis over the vegetables, making sure to coat them evenly. The acidity of the tomato will help break down the fennel fibers during the long, slow cooking process.
    Look for The tomato coulis should mostly cover the vegetables to keep them moist during the braise.
    Tip Do not stir the ingredients, as keeping the layers intact helps the fennel cook evenly.

Check that the herbes de Provence are distributed evenly over the vegetables. The tomato coulis should be poured carefully to cover the fennel and onions without being stirred, preserving the integrity of the layers.

The slow cooker insert should be clean on the rim to ensure a tight seal with the lid, which is crucial for maintaining the necessary humidity.

Braising Phase

  1. Braise and Serve
    Cover the slow cooker and cook on low for 4 hours. Once the time is up, check that the fennel is fork-tender and the sauce has thickened into a glossy coating. Allow the dish to rest for 5 minutes before transferring the fennel and sauce to a warm serving plate.
    Look for The fennel is done when a knife slides through the thickest part with no resistance.
    Tip Serve immediately while hot to enjoy the best texture and aroma of the herbs.

The dish is finished when the fennel is tender and the sauce has reduced to a glossy, thick consistency. The kitchen should smell aromatic and savory. Ensure the slow cooker has been turned off and the fennel is handled gently when transferring to a serving dish to keep the wedges intact and beautifully presented for serving.

Common mistakes

A common mistake is cutting the fennel wedges too thinly, which can cause them to fall apart during the long cooking time. Aim for uniform, thick wedges to maintain their structure.

Avoid opening the lid frequently during the cooking process, as each lift releases heat and moisture, significantly increasing the total cooking time and potentially drying out the sauce. Also, ensure the fennel is not overcrowded; if your slow cooker is small, use only as much as fits comfortably in a single layer to ensure even heat distribution.

How to tell it’s done

The fennel is perfectly done when it reaches a fork-tender consistency, meaning a sharp knife or fork slides through the center of the thickest wedge with absolutely no resistance. The tomato sauce should appear glossy and slightly reduced, having coated the fennel wedges thoroughly.

If the fennel still feels firm in the center, continue cooking for an additional 30 minutes. The onions should be completely soft and translucent, having melded into the sauce, creating a rich and harmonious flavor profile.

Coming up in Part 3: common questions

  • Can this recipe be prepared in a standard oven instead of a slow cooker?
  • What is the best way to slice the fennel for this recipe?
  • Is it possible to use dried herbs instead of herbes de Provence?

Also in Part 3: variations (Cheesy Fennel Bake, Mediterranean Style), 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)