Grilled Steak and Portobello Mushroom Sandwiches - The Scramble

Ingredients

• 6-8 oz. portobello mushroom caps ((2 – 4 mushroom caps) )
• 1 lb. boneless steak (or use extra portobello mushrooms)
• 1/4 cup extra virgin olive oil
• 1/8 cup balsamic vinegar
• 1/2 tsp. chili powder (or more to taste)
• 3 cloves garlic (minced, about 1 1/2 tsp. )
• 1/4 tsp. salt
• 3 Tbsp. herbed or plain goat cheese
• 4 whole wheat buns (use wheat/gluten-free, if needed)