Easy Slow Cooker Tomato Basil Spaghetti Squash Step-by-step instructions

Before you start

Before you begin, ensure your slow cooker is clean and placed on a flat, heat-resistant surface. Wash the spaghetti squash thoroughly under cool running water to remove any dirt from the exterior skin.

Use a sturdy, sharp chef's knife to carefully cut the squash in half lengthwise; if the squash is difficult to cut, you can microwave it for 2 to 3 minutes to soften the skin slightly. Use a metal spoon to scrape out all the seeds and stringy pulp from the center of each half, creating clean cavities for your sauce.

Instructions

Squash Preparation

1. 1Prepare the squash
   Place the halved spaghetti squash into the bowl of the slow cooker with the cut side facing upward to ensure the sauce stays within the cavity.
   Look for The squash should fit snugly within the insert.
   Tip Ensure the squash is stable so it does not tip over during cooking.

At this stage, the squash should be halved, cleaned of all seeds and pulp, and positioned securely in the slow cooker. Ensure the cut sides are facing upward to hold the sauce effectively. The squash should be stable so that it does not shift or tip over during the cooking process. Verify that you have all your seasonings and sauce ready to go before moving to the next step, as this ensures a smooth transition to the cooking phase.

Seasoning and Sauce

2. 2Season and add sauce
   Scatter the minced garlic evenly over the exposed flesh of each squash half. Sprinkle the dried herbes de Provence over the garlic, then pour the tomato sauce directly into the center cavities of the squash halves.
   Look for The tomato sauce should be evenly distributed between the two halves.
   Tip Adding the sauce directly into the cavity helps steam the squash from the inside out.

Once the garlic, herbs, and tomato sauce are added, check that the ingredients are evenly distributed across both halves of the squash. The garlic should be spread out to ensure consistent flavor, and the sauce should be contained within the cavities. This phase is complete when the slow cooker is covered and the heat is set. Ensure the lid is properly seated to trap the steam, which is essential for cooking the squash to the desired level of tenderness.

Final Cooking

3. 3Cook and finish
   Cover the slow cooker and cook on high for 4 hours or until the squash flesh is tender when pierced with a fork. Once cooked, sprinkle the shredded mozzarella cheese over the top and cover for 5 minutes until melted before serving.
   Look for The squash strands should be easily scraped away with a fork.
   Tip Watch for the cheese to be completely melted and bubbly.

After the cooking time has elapsed, the squash should be soft to the touch and the sauce should be hot and fragrant. The final step of adding cheese and letting it melt creates a cohesive, comforting finish.

Check that the cheese has completely melted and the squash is easily shredded into strands with a fork. If the squash still feels firm, continue cooking for another 15 to 20 minutes before checking again, ensuring the final dish is perfectly tender and ready to serve.

Common mistakes

A common mistake is failing to remove all the seeds and fibrous strands from the center of the squash, which can leave an unpleasant texture in your finished dish. Ensure you take the time to scrape the cavities cleanly before adding the sauce.

Another error is overcrowding the slow cooker; if the squash halves are too large for your insert, they will not cook evenly and the sauce may spill over. Always choose a squash that fits comfortably to ensure the heat circulates properly for the best results.

How to tell it’s done

The spaghetti squash is done when the flesh is completely tender and can be easily pulled into strands with the tines of a fork. When you pierce the thickest part of the squash, there should be no resistance.

The sauce should be bubbling and well-incorporated into the squash strands, and the cheese should be fully melted and slightly browned if you choose to leave the slow cooker on for an extra minute after sprinkling. The internal texture should be soft and slightly translucent, indicating it is cooked through perfectly.