"Make and share this Mushroom Risotto in Pressure Cooker recipe from Food.com...."
INGREDIENTS
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4 tablespoons olive oil
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4 tablespoons butter, divided
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1 medium onion, diced
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2 garlic cloves, minced
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8 ounces portabella mushrooms, sliced
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1 1⁄2 cups arborio rice or 1 1⁄2 cups risotto rice
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4 cups chicken broth
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1 -1 1⁄2 cup fresh grated parmigiano-reggiano cheese