One-Pot Garlic Butter Penne with Spinach and Mushrooms
A comforting one-pot pasta dish where penne cooks in garlic butter sauce with earthy mushrooms and fresh spinach, ready in under 30 minutes. This italian-inspired pasta (vegetarian) ready in about 25 minutes pairs penne pasta, unsalted butter, minced garlic cloves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 420 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 "Plan a meal with the AI" 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.
Ingredients
- 8 oz penne pasta
- 3 tbsp unsalted butter
- 4 cloves, minced garlic cloves
- 1 cup, sliced cremini mushrooms
- 3 cups fresh baby spinach
- 3 cups vegetable broth
- 1/2 cup grated Parmesan cheese
- 1 tsp salt
- 1/2 tsp black pepper
- 1/4 tsp (optional) red pepper flakes
Instructions
- Step 1: In a large deep skillet or pot, melt 3 tbsp unsalted butter over medium heat. Add 4 minced garlic cloves and sauté for 1 minute until fragrant but not browned.
- Step 2: Add 1 cup sliced cremini mushrooms and cook for 5 minutes, stirring occasionally, until mushrooms release moisture and begin to brown.
- Step 3: Pour in 3 cups vegetable broth and add 8 oz penne pasta along with 1 tsp salt, 1/2 tsp black pepper, and 1/4 tsp red pepper flakes if using. Bring to a boil, then reduce heat to medium-low and simmer uncovered for 12-14 minutes, stirring occasionally until pasta is al dente and most liquid is absorbed.
- Step 4: Stir in 3 cups fresh baby spinach and cook for 2 minutes until wilted. Remove from heat and mix in 1/2 cup grated Parmesan cheese until melted and creamy. Serve warm.
Frequently asked questions
How long does One-Pot Garlic Butter Penne with Spinach and Mushrooms take to make?
Total time is about 25 minutes (5 min prep + 20 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.
How do I store leftover One-Pot Garlic Butter Penne with Spinach and Mushrooms?
Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep penne pasta from drying out.
Can I substitute ingredients in One-Pot Garlic Butter Penne with Spinach and Mushrooms?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale One-Pot Garlic Butter Penne with Spinach and Mushrooms for a different number of people?
The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
Is One-Pot Garlic Butter Penne with Spinach and Mushrooms vegetarian?
Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.
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