Answer:
I'm vegan and this is what I typically eat in a day! 
Explanation:
Breakfast - Oatmeal with berries, soy milk, and nuts
Grains: Oats are gluten free, whole grain, and contain many important vitamins, minerals, fiber, and antioxidants. 
Fruits/vegetables: Berries are chock full of fiber, vitamins, and antioxidants 
Dairy & alternatives: Soy milk is a good alternative to dairy as it is high in protein and omega 3 fatty acids 
Proteins: Nuts such as almonds, cashews, and walnuts are a good source of plant based protein 
Lunch - Chickpea pasta with green peas and leeks sauce + side of frut 
Grains/legumes and proteins: Chickpeas are an excellent legume to eat. They are high in protein, fiber, and vitamins/minerals. Chickpea pasta is a healthier alternative to regular white flour pasta. 
Vegetables: Green peas, broccoli, spinach, and leeks are rich in vitamins and minerals like calcium.
Dairy & alternatives: Soy cooking cream to make the sauce creammyyy 
Fruits: Oranges are so refreshing and sweet so I typically eat oranges. The vitamin C content also helps you to absorb the iron from the vegetables. 
Dinner - Lentil curry with vegetables and brown rice 
Grains: Brown rice is a good alternative to white rice, which is more refined and starchy. Brown rice also has more nutrients and fiber. 
Vegetables: Cauliflower, sweet potato, tomatoes
Dairy & alternatives: Coconut milk 
Proteins: Lentils are very high in protein and iron 
Dessert - Chocolate peanut butter oatmeal blondies 
*this is dessert so obviously it isn't the healthiest, but I think that to have balance, you should allow yourself to eat a treat! 
Grains: Oatmeal - I love oatmeal so i eat it a lot 
Fruit: I typically eat these with berries like raspberries 
Dairy & alternatives: Plant based milk 
Proteins: Peanut butter  
Hope this helps! Best of luck <3