Burgers with Smashed Avocado & Beer-Battered Onion Rings - CraftBeer.com

Ingredients

• 1 large red onion, sliced into 1/4 –inch rings
• 1 1/2 cups all-purpose flour, divided
• 12oz (about 1 1/2 cups) pale lager (like pilsner or helles)
• 1/2 teaspoon baking powder
• 1/2 teaspoon paprika
• 1/2 teaspoon salt
• canola oil, for frying
• 1 pound ground beef
• 1 ripe avocado
• 1 small lime
• 4 burger buns