Creamy spinach and Broccoli Lasagne

Spinach and broccoli stud alternating layers of creamy garlic sauce and a three-cheese spread for a family dinner that will satisfy cravings while getting some vitamins in your system Ingredients 1 tbsp oil 1 small onion Salt and black pepper 2 garlic cloves 1 packet of frozen spinach 1 packet of frozen broccoli florets 1