Creamy Sun-Dried Tomato Fettuccine

Ingredients (13)

• ✓ ¼ cup olive oil, divided
• + ¾ pound dry fettuccine pasta add to pantry
• ✓ ½ cup plain fat-free Greek yogurt
• + ¼ cup reduced-fat sour cream add to pantry
• + ½ cup sun-dried tomatoes, sliced add to pantry
• ✓ 5 cloves garlic, minced
• + 1 (14.5 ounce) can petite diced tomatoes, drained add to pantry
• + 2 tablespoons sugar, or more to taste add to pantry
• + 1 tablespoon tomato paste add to pantry
• + salt and freshly ground black pepper to taste add to pantry
• + salt and freshly ground black pepper to taste add to pantry
• + 1 ½ cups baby spinach add to pantry
• + crushed red pepper flakes add to pantry