Mexican Cornbread

My mom-in-law's original Mexican Cornbread recipe.

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1 cup corn meal
1 cup flour
1 cup milk
4 tsp baking powder
1/2 tsp salt
1/4 cup oil
1 egg
1/2 cup chopped onion
1 can cream style corn
1 cup grated cheddar cheese
chopped jalapenos, according to taste (we like lots)

Preheat oven to 425 degrees. Put some vegetable oil, or bacon grease in a 9 x 13 pan. Place pan in oven while oven is preheating. Mix all ingredients together. Pour into preheated 9 x 13 pan and cook for 25 minutes.