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Ingredient Specific Calorie Information From Our Recipes: 1  Calories In Beef Fajitas Calories: 393, Fat: 12g, Carbs: 38g, Protein: 34g, Fiber: 7g. 2  Calories In Beef Fajitas Calories: 218, Fat: 4g, Carbs: 30g, Protein: 17g, Fiber: 4g. 3  Calories In Chili's Style Grilled Beef Fajitas Calories: 235, Fat: 13g, Carbs: 7g, Protein: 24g, Fiber: 1g.
When it comes to calories and protein, beef heart is about equal to white-meat chicken. A 3-ounce serving of beef heart has just 95 calories and 15 grams of protein. This amount of protein gives men 27 percent of their recommended daily intake, while women get 32 percent. Beef heart contains 3 grams of total fat in a 3-ounce serving, which is only slightly more than the same portion of chicken breast.