Pasta with Mushrooms, Tomatoes & Spinach

Bahan-bahan (6 porsi)

• 1 pound whole-wheat pasta, cooked al dente according to package instructions
• 2 tablespoons butter
• 8 ounces of white button or baby bella mushrooms, sliced
• salt and pepper
• 2 tablespoons olive oil
• half a medium red onion, peeled, quartered and sliced
• 5 cloves garlic, peeled and thinly sliced
• 2 cups (about 10 ounces) cherry or grape tomatoes, halved
• 1/2 cup white wine
• 3 large handfuls baby spinach leaves
• optional toppings: 1/4 cup toasted pine nuts and/or freshly-grated Parmesan cheese