Alma's 1 point muffins (she got this from a WW meeting)

3 cups Quaker LF bran muffin mix
3 cups All Bran
3 cups water
2 heaping teaspoons baking powder
1/2 teaspoon cinnamon
1 1/2 cups mashed bananas
soak water, all bran and bananas for 5 mins
mix dry ingredients
mix dry with wet until just moistened

This recipe uses 350F for 25-30 minutes and makes 24 muffins

They are light and taste great.

I trie Texas cups (12 muffins) and found that the centre was mushy like it's
not cooked and they don't rise much.
In my second attempt I tried 375F for 35 minutes and I also tried 2 heaping
Tablespoons of baking powder rather than teaspoons, added 1/2 cup regular
rolled oats and 1/4 cup raisins to raise the point count for the Texas
muffins to 3 points. Still mushy in the middle.

Can anyone tell me the proper time and temp for the Texas size muffins?

Thanks
Wayne