Pasta with Asparagus and Lemon Sauce

By Barbara

5.0 / 5

20min

20min

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2 lemons
1 (16 ounce) box penne pasta
5 tablespoons butter divided
¾ pound asparagus trimmed and cut into 1-inch pieces
salt and freshly ground black pepper to taste
3 tablespoons all-purpose flour
¾ cup heavy cream
1 ½ cups vegetable broth or more to taste
4 sprigs fresh parsley chopped
1 pinch white sugar or to taste
2 ripe tomatoes seeded and diced
½ cup freshly shaved Parmesan cheese