Baked Penne with broccoli

2 teaspoons olive oil 3 garlic cloves , minced 2 cups penne pasta 3 cups broccoli florets , 1-inch pieces 2 cups purchased marinara sauce 1 cup coarsely[...]

1 tablespoon butter 3 cups ragu parmesan & romano pasta sauce 2 cups chopped broccoli 1/2 lb shrimp , cooked (or more to your liking) 8 ounces mushrooms 13[...]