O is for Onion Blossom recipe

The letter of the day over at ABC Wednesday is .........

the letter O as in O is for Onion Blossom

2 large sweet onions, unpeeled
1/2 cup mayonnaise
1/2 cup sour cream
1 tablespoon chili powder
2-1/2 teaspoons Cajun seasoning, divided
1-1/4 cups all-purpose flour
1 cup milk
Oil for deep-fat frying
Directions
Leaving the root end intact, peel the outer skin of the onion. Cut a small slice off the top. Starting at the top of the onion and on one side, make a cut downward toward the root end, stopping 1/2 in. from the bottom. Make additional cuts 1/8 in. from the first until there are cuts completely across top of onion.
Turn the onion a quarter turn so the slices are horizontal to you. Repeat the cuts 1/8 in. apart from each other until there is a checkerboard pattern across entire top of onion.
In a small bowl, make dip by combining the mayonnaise, sour cream, chili powder and 1-1/2 teaspoons Cajun seasoning; set aside.
In a 1-gal. plastic bag, combine flour and remaining Cajun seasoning. Place milk in a small deep bowl. Coat the cut onion in flour, then dip into milk and back into the flour mixture.
Fry in enough oil to cover onion at 375° for 5 minutes or until golden, turning once. Remove from oil; place on serving plate. Discard the very center of the fried onion blossom. Place a few spoonful of dip in the center of blossom and serve immediately.