Country Hash Browns with Sausage Gravy

Name: Country Hash Browns with Sausage Gravy
Ingredients: 1/3 lb. vegan breakfast sausage (cut into small pieces); 3 tbsp whole wheat (or unbleached flour); 1/2 tsp onion powder; 2 tbsp nutritional yeast; 1 cup homemade vegetable broth; 1 cup unsweetened non-dairy milk; 2 tsp low sodium tamari ((or low sodium soy sauce)); salt and black pepper (to taste); 1 lb. frozen hash browns (no added oil); 1/2 onion (diced); 1 bell pepper (any color, stem removed, seeded and chopped); 2 cloves garlic (minced); 1 small Jalapeño (seeds and veins removed, thinly sliced (optional)); chives (for garnish)