Italian Sausage Tortellini

Ingredients (8)

• + 2 tablespoons unsalted butter add to pantry
• + 1 (8 ounce) package baby portobello mushrooms, sliced add to pantry
• + 1 cup dry white wine (such as Pinot Grigio), divided add to pantry
• ✓ 3 cloves garlic, minced, divided
• + 10 ounces mild Italian sausage, casings removed add to pantry
• + 1 (16 ounce) package three-cheese tortellini add to pantry
• + 14 ½ ounces Alfredo basil sauce add to pantry
• ✓ 1 (5 ounce) package baby spinach leaves