Here is a list of cost-effective protein replacements for eggs.
Not Eggsactly: Free Protein Replacement Menu to Replace One Serving of Egg.
1 Egg = 1 Ounce Meat = 7 Grams Protein
Here are some suggestions to replace 1 egg serving on the menus:
4 oz Greek yogurt (fruit)
4 oz cottage cheese (fruit)
1 oz salmon (bagel)
½ cup black beans (with ½ oz shredded cheese in tortilla)
2 Tbsp peanut butter (with toast)
1 cup quinoa (top with honey and berries)
1 oz sausage (serve with muffin or toast)
2 sl French toast
We might also suggest a Homemade Protein Bar (oatmeal, peanut butter and banana flavor should be well accepted at breakfast)