This is what google told me:
Breakfast (Desayuno)
fruit cocktail, maybe with a little yogurt and honey drizzled on top, with granola sprinkled over it.
tamales, often in a bun called a bolillo, with atole, a hot drink made from milk and corn starch, usually chocolate, or rice with cinnamon, although comes in caramel, strawberry, guava, and a whole lot of other flavors
breakfast cereal.
scrambled eggs with refried beans mixed in.
quesadillas, of cheese, of mushrooms, of whatever- the list is very long
Lunch. (Comida)
Usually with agua de sabor (water flavored with fruit) like lemon, pineapple, jamaica (habiscus flowers boiled and strained), melon, watermelon - or pop - or beer depending on where you eat
most often a choice of chicken soup (caldo de pollo) or some other kind of soup (tortilla soup, cream of carrot, cream of asparragus, etc.)
followed by a small plate of rice often served with fried egg or fried banana, OR, spaghetti with sour cream
THEN, the guisado, most commonly breaded meat, regular meat (flattened) or chicken breast served with some beans and a little salad, but also may include enchiladas, pozole, chiles rellenos, avacado stuffed with tuna, fried fish, or spinach with cheese inside, coated in a light batter and served with a light tomato sauce.
Dessert is often arroz con leche (rice pudding), ate (a fruit compote), a small serving of cheap icecream, or banana slices with cream and sugar. (the steps aren't as distinct if you eat at home, and maybe dessert will just be a twinky or donut from the store)
Dinner (eaten in the mid/late evening)
cereal, quesadillas, fruit, a ham and cheese sandwich, tamales -usually nothing heavy