One-Pan Tomato and Mushroom Pasta with Spinach

By AislePrompt Editorial · Published 2026-04-09 · Updated 2026-04-09

How this recipe was made — this recipe was drafted by AislePrompt's AI-assisted pipeline from technique templates and USDA-sourced nutrition data, and published by AislePrompt Editorial — see how AislePrompt recipes are drafted and published.

Quick pasta cooked in a single pan with a rich tomato and mushroom sauce, finished with fresh spinach. This Italian one-pot recipe, ready in about 30 minutes, pairs spaghetti, olive oil, and onion for a weeknight-friendly dinner. Each serving lands at about 450 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Build a week of meals around this recipe" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 10 min Cook: 20 min Serves 4 Italian cuisine 450 cal/serving

Build a week of meals around this recipe → Shop this recipe on Instacart → Shop equipment ↓

Ingredients

8 oz spaghetti
2 tbsp olive oil
1 medium onion, diced
2 cloves garlic, minced
8 oz cremini mushrooms, sliced
1 (14 oz) can diced tomatoes
1/2 cup vegetable broth
1 tsp dried oregano
1/2 tsp red pepper flakes
2 cups fresh spinach
to taste salt
to taste black pepper
1/4 cup (optional) grated parmesan

Nonstick skillets worth buying → Best Nonstick Cookware for 2026: Top 5 Skillet Picks + Buying Guide

Affiliate disclosure: AislePrompt may earn a commission on qualifying purchases made through Amazon links, at no additional cost to you. See our policy →

Equipment for this recipe

Tools this recipe's steps call for, with a link to each on Amazon.

More Cookware & pots → Shop all kitchen tools →

Instructions

Step 1: Heat 2 tablespoons olive oil in a large skillet over medium heat. Add 1 diced medium onion and cook for 5 minutes until softened and translucent. Add 2 minced garlic cloves and cook for 1 minute until fragrant.
Step 2: Add 8 ounces sliced cremini mushrooms to the skillet and cook for 5 minutes until browned and moisture evaporates. Stir in 1 teaspoon dried oregano and 1/2 teaspoon red pepper flakes, then pour in 1 (14 oz) can diced tomatoes and 1/2 cup vegetable broth. Simmer for 10 minutes until sauce thickens.
Step 3: Add 8 ounces spaghetti to the skillet, stirring to submerge it in sauce. Cook for 8-10 minutes, stirring occasionally, until pasta is al dente and sauce coats strands. Stir in 2 cups fresh spinach and cook for 1 minute until wilted. Season with salt and black pepper, then sprinkle with 1/4 cup grated parmesan if desired.