Vegan Spinach Artichoke Dip

Name: Vegan Spinach Artichoke Dip
Prep time: 10 min
Cook time: 40 min
Total time: 50 min
Cuisine: American
Ingredients: 2 tbsp vegan butter or extra virgin olive oil; 3 cloves of garlic, sliced; ½ onion, chopped; 14 oz can artichoke hearts (400 g), drained and chopped; 2 tbsp flour, gluten-free if needed; 2 cups unsweetened plant milk (500 ml), I used soy milk; 8 oz vegan cream cheese (225 g), softened at room temperature; 2 tbsp nutritional yeast; ¼ tsp salt; ⅛ tsp ground black pepper; 10 oz frozen spinach (290 g), thawed and chopped; 2 tbsp vegan Parmesan cheese (optional)