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One-Pan Summer Squash, Zucchini & Tomato Sauté

Name: One-Pan Summer Squash, Zucchini & Tomato Sauté (Serves 4)
Prep time: 15 min
Cook time: 20 min
Yield: 1 recipe
Ingredients: 2 tbsp olive oil; 1 large yellow onion, sliced; 3 cloves garlic, minced; 1 medium zucchini, sliced 1/2-inch; 1 medium yellow squash, sliced 1/2-inch; 2 bell peppers (any color), seeded and sliced; 3 medium tomatoes, roughly chopped; 1 tsp dried oregano; 1/2 tsp red pepper flakes (optional); Salt and black pepper to taste; 2 tbsp chopped fresh basil or parsley; 1/4 cup grated Parmesan (optional)

Prep 15 min Cook 20 min Difficulty 2/5

One-pan summer squash, zucchini, and tomato sauté — quick, colorful, and easy weeknight dinner (serves 4).

Why this recipe works

This one-pan summer vegetable sauté combines squash, peppers, and tomatoes for a bright, weeknight-friendly dish. It suits small families, meal preppers, and anyone looking for a fresh, veg-forward dinner with minimal cleanup.

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Recipe guide

A quick, colorful, all-in-one skillet dinner.

One-pan, quick and colorful
Customize with your favorite herbs
Finish with Parmesan for extra zing (optional)

Overview

A simple, all-in-one skillet dish: sauté onion and garlic, add summer vegetables, season, simmer with tomatoes, finish with herbs and optional Parmesan.

Tips for best results

Cut vegetables to similar sizes for even cooking. Use a hot skillet and avoid overcrowding. Add salt gradually to season without drawing moisture.

Make-ahead and serving ideas

Prep vegetables in advance, store sliced components separately. Reheat gently and serve with crusty bread, grain bowls, or as a side to grilled proteins.

Ingredients

2 tbsp olive oil

1 large yellow onion, sliced

3 cloves garlic, minced

1 medium zucchini, sliced 1/2-inch

1 medium yellow squash, sliced 1/2-inch

2 bell peppers (any color), seeded and sliced

3 medium tomatoes, roughly chopped

1 tsp dried oregano

1/2 tsp red pepper flakes (optional)

Salt and black pepper to taste

2 tbsp chopped fresh basil or parsley

1/4 cup grated Parmesan (optional)

Instructions

Heat olive oil in a large skillet over medium heat.

Add sliced onion and cook until softened and translucent, about 5 minutes.

Stir in minced garlic and cook 30 seconds until fragrant.

Add zucchini, yellow squash, and bell peppers to the pan and cook, stirring occasionally, until vegetables begin to brown and soften, about 7–8 minutes.

Season with dried oregano, red pepper flakes (if using), salt, and black pepper; stir to combine.

Add chopped tomatoes and cook until tomatoes break down and vegetables are tender, about 5 minutes.

Taste and adjust seasoning as needed.

Stir in chopped basil or parsley and remove from heat.

Sprinkle with grated Parmesan if desired and serve warm.

FAQs

Can I use other vegetables? Yes. Add mushrooms, eggplant, or snap peas to vary texture.

Is it gluten-free? Yes, it is naturally gluten-free.

How can I make it vegetarian-friendly if using cheese? Skip the Parmesan or use a dairy-free substitute.