Preheat the oven to 180C degrees.
Soften the pasta shells in boiling water for 5 min.
To prepare the filling. Chop the spinach and mix it with the ricotta cheese, grated cheddar cheese, parmesan (save a little bit of the cheese for the top), 2 tablespoons of the garlic-infused olive oil and salt and pepper according to taste.
Fill the pasta shells and place them in a baking dish.
Mix the marinara sauce with 2 Tablespoons of the garlic-infused olive oil, and pour it on the sides of the pasta shells. Top it with the leftover cheese
Bake for about 30min on a 180C degrees.
Best to have it warm.