
This vibrant yellow squash dish transforms humble summer vegetables into a colorful side that pairs perfectly with almost any protein. The natural sweetness of yellow squash combined with juicy tomatoes creates a light yet satisfying addition to your dinner table that comes together in under 30 minutes.
I first made this recipe after my sister Val shared it with me during summer when our gardens were overflowing with squash. Even my vegetable skeptical family members ask for seconds when this appears on our dinner table.
Ingredients
- Olive oil provides the perfect base for sautéing without overwhelming the delicate vegetables
- Yellow onion adds aromatic sweetness and depth
- Garlic cloves bring essential savory notes that enhance the vegetables
- Yellow summer squash should be firm and bright for best flavor
- Cherry tomatoes offer juicy bursts of acidity that balance the dish
- Salt and pepper for seasoning according to your taste preferences
- Parmesan cheese creates a nutty salty finish that transforms simple vegetables
Step-by-Step Instructions
- Prep the Vegetables
- Dice the onion into small even pieces. Mince the garlic cloves finely to distribute flavor throughout the dish. Slice cherry tomatoes in half to release their juicy goodness. Cut the squash by first removing both ends then slicing lengthwise into halves or quarters for larger squash. Finally cut crosswise into uniform 3/4 to 1 inch slices for even cooking.
- Sauté the Aromatics
- Heat 2 teaspoons olive oil in a large nonstick skillet over medium high heat. Add diced onion and cook for 2 to 3 minutes until they begin to soften and become translucent but not browned. This creates a flavor foundation without burning the delicate onions. Add minced garlic and sauté for 1 minute more until fragrant but not brown which would create bitterness.
- Cook the Squash
- Add sliced squash to the pan along with another teaspoon of oil if needed. Cook the squash turning frequently for 6 to 8 minutes until the pieces are cooked through and developing some golden brown spots but still retain a slight crispness. The goal is tender squash with some texture not mushy vegetables.
- Finish the Dish
- Gently stir in the halved cherry tomatoes and cook for just 1 minute to warm them through without causing them to break down completely. Season generously with salt and freshly ground black pepper according to your taste preferences. Immediately sprinkle the grated Parmesan cheese over the hot vegetables allowing it to slightly melt before serving.

The Parmesan cheese is truly the secret ingredient in this recipe. When sprinkled over the hot vegetables it creates a savory umami layer that transforms simple squash into something extraordinary. My family initially claimed they disliked squash until this dish changed their minds forever.
Make Ahead Options
This squash recipe tastes best freshly made but you can prepare components ahead of time to streamline dinner prep. Dice onions chop garlic and slice squash up to 24 hours in advance and store in separate airtight containers in the refrigerator. When ready to cook simply proceed with the recipe as written for a quick weeknight side dish.
Serving Suggestions
This versatile squash side pairs beautifully with grilled chicken fish or steak for a complete meal. For a vegetarian option serve alongside a hearty quinoa salad or crusty bread to soak up the flavorful juices. During summer gatherings I often double the recipe and serve it slightly warm as part of a buffet where it disappears quickly.
Seasonal Variations
Summer brings abundant yellow squash but this recipe adapts well throughout the year. In winter substitute zucchini or butternut squash adjusting cooking time accordingly. During spring try adding fresh herbs like basil or thyme in the final minute of cooking. For fall incorporate a pinch of crushed red pepper flakes for warming heat that complements cooler weather meals.

Recipe FAQs
- → Can I use other types of squash for this dish?
Yes! While yellow summer squash provides the classic flavor, you can substitute zucchini, patty pan squash, or even delicata squash. Just adjust cooking times slightly as needed - zucchini cooks similarly to yellow squash, while denser varieties might need an extra minute or two.
- → How do I prevent the squash from becoming too mushy?
The key is to use medium-high heat and avoid overcrowding the pan. Cut the squash into even, slightly thicker pieces (3/4-1 inch), and don't cook longer than 6-8 minutes. The squash should be tender but still have a slight bite to it when done.
- → Can I make this dish ahead of time?
This dish is best enjoyed fresh, as the squash can release moisture when stored. However, you can prep all ingredients ahead of time and quickly cook just before serving. If you must make it ahead, reheat gently in a skillet and add fresh Parmesan just before serving.
- → What can I serve with yellow squash and tomatoes?
This versatile side pairs beautifully with grilled chicken, fish, or steak. It also works well alongside pasta dishes or as part of a vegetarian meal with quinoa or farro. For a complete light meal, serve with a slice of crusty bread.
- → Can I add other vegetables to this dish?
Absolutely! Bell peppers, spinach, or mushrooms would be excellent additions. Add firmer vegetables like peppers when you add the squash, and more delicate items like spinach during the last minute of cooking with the tomatoes.
- → Is there a dairy-free alternative to Parmesan?
For a dairy-free version, you can use nutritional yeast for a similar umami flavor, or try a plant-based Parmesan alternative. You could also finish the dish with toasted pine nuts or breadcrumbs for texture and flavor.