INGREDIENTS
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2 tablespoons butter
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2 pints button mushrooms, cleaned and sliced
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½ medium onion, diced (about ½ cup)
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½ medium green pepper, diced (about ½ cup)
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½ teaspoon kosher salt
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½ teaspoon fresh cracked black pepper
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½ can Ro-tel, or tomatoes with green chilies, drained
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1 clove garlic, minced, about 1 teaspoon
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½ teaspoon cumin
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½ teaspoon chili powder
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3 tablespoons all-purpose flour
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⅓ cup chicken stock
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1½ cups half and half
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1 cup sour cream, divided
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2 cups shredded roast chicken
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10 corn tostadas
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2 cups shredded medium cheddar cheese
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1 tablespoon smoked paprika, optional for garnish