In small bowl, whisk together mayonnaise, horseradish, ketchup, garlic, chili powder, smoked paprika, salt and pepper.
Blooming Onion:
Preheat oven to 425°F (220°C). Slice off onion top about 1/4 inch down (not the root end). Set onion on flat side on cutting board.Without cutting all the way through and keeping base intact, cut into 12 sections, stopping about 1 inch (2.5 cm) from root end. Peel and discard outermost layer of the onion, leaving root end intact. Gently pull apart sections to separate into petals to resemble a flower.
In a shallow bowl, whisk eggs with milk; set aside. In a separate shallow bowl, whisk together flour, steak spice and baking powder. Dip onion into egg mixture, then in flour mixture. Repeat.
Place on parchment paper–lined baking sheet. Drizzle with melted butter and olive oil. Bake for 22 to 25 minutes or until onion is tender and browned. Sprinkle with cheese; bake for about 5 minutes or until cheese is melted.
Serve blooming onion with sauce for dipping.
Tips:
The onion can also be prepared in an air fryer! Preheat the air fryer to 400°F (200°C); air-fry for 8 to 10 minutes or until golden and crispy.
Ingredients:
Blooming Onion:
1 very large red onion
2 eggs
2 tbsp (30 mL) milk
1/2 cup (125 mL) all-purpose flour
2 tbsp (30 mL) Montreal steak spice
1 tbsp (15 mL) baking powder
2 tbsp (30 mL) butter, melted
2 tbsp (30 mL) olive oil
1 cup (250 mL) shredded Balderson Extra Old Cheddar Cheese
